Today, the editor saw an article on Weibo about rescuing stray dogs. The stray dogs have no care from their families, and they don’t have enough to eat or sleep. Especially now is the season when fleas, ticks and other parasites are most common. Furry children who wander outside are easily bitten, and treatment without anthelmintics will only allow the parasites to multiply. Suffering from severe skin diseases and allergies to hair removal. The editor was very sad to see this, so I decided to learn about the dangers of external parasites and the importance of external parasites with everyone.

As an owner, in addition to providing necessary food and good care for your dog, you must also invest more energy in caring for your dog's health. Among them, the issue of external deworming of dogs is easily overlooked by us.

1. Why deworming is needed

Dogs are lively and active animals, which also gives them more opportunities to come into contact with the outside world than other pets. Moreover, many dogs also like to roll and play in the grass, which adds to the problem. Increases their chances of becoming infected with parasites. Especially for dogs with longer hair, even if there are parasites on them, it is difficult for us to detect them. There are many types of parasites that infest dogs. These parasites can cause symptoms such as weight loss, vomiting, butt grinding, and even skin problems in dogs. Many parasites can also be transmitted to us, so not only for the sake of dogs, but also for our own health and safety, we should also deworm our dogs regularly. Different deworming drugs will have different effects, and we need to choose according to the actual situation of the dog.

2. Types of parasites

First of all, we need to know what kind of parasites are driven out by external deworming. External deworming generally targets parasites on the body surface. Surface parasites are divided into intradermal and extracutaneous parasites.

Skin external parasites: ticks, fleas, lice, etc.

1. Ticks: Ticks are temporary parasites on the body surface of many kinds of vertebrates and are the vectors and reservoirs of some zoonotic diseases. When not sucking blood, the small ones are as big as mung beans, and some are as thin as rice grains; after sucking blood, they are the size of plump soybeans, and the big ones can be as big as a fingernail. Ticks in some areas may carry a hantavirus, and the vector of this virus can be mosquito-borne, tick-borne, animal-borne, etc. Ticks are blood-sucking arthropods that parasitize on the body surface of dogs and mechanically damage the skin, causing itching, restlessness, and bite and friction by sick dogs. Female ticks suck blood, about 0.4 ml at a time. Excessive parasites can cause anemia. An important issue is that ticks can transmit diseases or serve as intermediate hosts for certain parasitic diseases in dogs. Most ticks mate on the surface of animals. After mating, the female tick becomes saturated with blood, falls to the ground, crawls to a crack in the ground or under a clod of soil and lies there, laying eggs in 4-8 days. The eggs hatch into larvae in about one month. larvaThen it climbs onto the dog to suck blood; after it is full, it falls to the ground and transforms into a nymph. The nymph then sucks blood and matures after landing on the ground for more than ten days. After the adult worm is full of blood, its body becomes round, purple-black, and swells dozens or hundreds of times.

2. Fleas: Fleas are small, wingless, jumping parasitic insects. Adults usually live on mammals, and rarely on birds. When fleas bite the skin and suck blood, they excrete black particles, which look like dust and are often mistaken for flea eggs. When you open the hair, sometimes you can't find fleas, but only piles of "black sand". These "black sand" dissolve and turn into blood when they come into contact with water. You can easily distinguish that this is flea defecation and not dust. Fleas are ectoparasitic blood-sucking insects that cause itching in dogs. Fleas live in dust, cracks in the ground and bedding. Fleas are difficult to eradicate in a short period of time, so preventive measures are particularly important.

3. Lice: The main ones that harm dogs are blood lice and rodent lice. Blood lice are 1-5 mm long, have a narrow head and a conical body, and mainly feed on blood; hair lice mainly feed on hair and dander, and are 0.5-10 mm long, with a head wider than the chest. Blood-sucking parasitism causes itching, uneasiness, and sometimes small bleeding points, small nodules, and even suppuration on the skin, and the puppies are stunted. Hair louse parasitism causes hair loss and mild itching. When suffering from lice disease, lice and yellow-white lice eggs are easily found in the affected areas. Lice adults and nymphs feed on the host's body throughout their lives. The main hosts are: terrestrial mammals, with a few marine mammals, and humans are also often parasitized. Lice are not only harmful by sucking blood, but also make the host itchy and restless, and can transmit many important human and animal diseases. There are about 13 species of lice that parasitize domestic animals. Except for a few lice that parasitize humans and livestock, most of them are species that parasitize rodents.

Skin parasites: Demodex, scabies

1. Demodex: Demodicosis is also a common skin disease in dogs, mostly occurring in puppies aged 5-6 months. Demodex mites are so named because their bodies are elongated and resemble worms. It parasitizes in the hair follicles and sebaceous glands of the skin, from laying eggs to developing into larvae and even adults. The disease is transmitted by contact between healthy dogs and sick dogs. This kind of mite is often found in healthy puppies. When the body's resistance is reduced (caused by various reasons) or the skin is inflamed or the skin is soaked from frequent bathing, it can invade and multiply in large numbers to cause disease. Symptoms: The disease mainly occurs around the orbits of the head, neck, lips, nose, elbows, and paws. First, the hair is sparse, and then falls off to form round bald spots; the skin gradually becomes red, with bran-like dander, and the skin is thick and cracked. Afterwards, the skin turns blue-gray to copper-colored and does not itch. When there is secondary infection, mung bean to pea-sized nodules or abscesses will appear on the red, swollen, hairless skin. When squeezed, reddish pus or thick sebum will overflow. The lesions are covered with gray or gray-brown scabs and bran-like scales, and the skin may even form ulcers with yellow-red secretions.

2. Scabies: Scabies isA common skin disease in dogs caused by scabies mites, an ectoparasite. Scabies mites are arthropods that burrow into the host's skin and excavate tunnels in which the worms grow and reproduce. The tunnels have small holes for ventilation and for the entry and exit of the larvae; the larvae also burrow into the skin and excavate small burrows. Its development process includes four stages: egg, larvae, nymph and adult, and the whole process lasts 8-22 days. Symptoms: Scabies mainly occurs on the head (the bridge of the nose, eye sockets, and the base of the auricle). Sometimes it is also seen on the chest, lower abdomen, inside of the limbs, and the base of the tail. The skin is red and wrinkled, with scattered rash-like nodules and yellow scabs on the surface. The sick dog scratches, bites and rubs the affected area, causing hair loss. The disease is easily transmitted to humans. Ear mites invade the external auditory canal, causing severe itching, ear scratching, and shaking of the head. Dogs with long hair and big ears are especially susceptible.

3. Analysis of anthelmintic drug merchants

First of all, external deworming. A long time ago, pesticides were used to deworm in the United States. In the videos we watched, humans carried boxes similar to those used to apply pesticides to fruit trees today to go home to deworm. The images at that time were still black and white. So starting in the 1870s, pyrethroids began to be used for external insect repellent. So this is what Baichongshuang is currently using. Its ingredient is permethrin-imidacloprid drops.

By the 1880s, ivermectin anthelmintics began to be used for deworming. For example, Da Cao Dai used selamectin. In the 1890s, to be precise, Fironil was invented by Merial in France in 1994 and used in Fironil in 1996 for external deworming. Fiprenil can only be used to kill adult insects. Why can the second generation of Fulin be used to kill insect eggs? Because it contains methoprene. This is a juvenile hormone, which means that insect eggs cannot turn into larvae, and larvae cannot turn into adults, thus achieving the purpose of killing insect eggs.

According to the feedback from dog friends, BaiChongShuang is the most immediate. So much love, because it is an ivermectin-type drug, it can take care of mild ear mites, and Fulin can be said to be the safest. Baichongshuang is a pesticide that directly kills external parasites. Big pampering must enter the blood circulation.

1. Fulien

Fulien external insect repellent drops have two unique formulas:

FRONTLINE Plus and FRONTLINE Top Spot (Chinese name: FRONTLINE Plus Drops, produced by Merial, France)

Main ingredients: Fipronil + Methoprene

Insect repellent range: fleas and ticks (4 types of ticks), indirect prevention of heartworms

Absorption mode: Drugs reside in the skin through translocation and diffusionOil glands, and then released through the hair tube stem

Duration: It takes 24 hours for the drug to fully diffuse, fleas will die within 12 hours of exposure, and wall fleas will die within 48 hours of exposure. Prevent fleas for 1-3 months, and prevent wall fleas for 1 month.

① Fipronil is an adult-killing drug that can effectively kill adult fleas and ticks.

After fleas jump on dogs and cats, they immediately start sucking blood, and the female fleas lay eggs 24-36 hours later. Fipronil has been used preventively, and its Fipronil agent will kill fleas within 12 hours (before the female flea lays eggs), thus blocking the reproduction of fleas.

②(S)-methoprene methoprene, as an insect growth regulator, can inhibit the hatching of flea eggs and the development of young fleas and flea pupae, thereby comprehensively blocking the re-reproduction of fleas and preventing repeated fleas from infecting the home environment, providing benefits for pets. and family provides comprehensive and efficient protection.

　2. Big favor

Big Love Revolution (Chinese name: Big Love, produced by Pfizer of the United States)

Main ingredients: Selamectin (Selamectin and doramectin are both substitutes for ivermectin, so they are prohibited for Collies)

Scope of deworming: external fleas, wall fleas, ear mites, scabies mites, demodex mites, hair follicle worms, internal roundworms, hookworms, and heartworms (tapeworms are invalid)

Absorption mode: The drug is absorbed through the skin into the blood and intestinal tract (so it can kill internal parasites), part of it returns to the sebaceous glands (only a part returns, and the lethality to external parasites will definitely be reduced), and then it is released through the hair stem for a period of time : Fast spreading speed, fleas and wall fleas will die 36 hours after application. Prevent fleas, wall fleas, etc. for 1 month.

3. Please be pampered

Baichongshuang Advantix (Chinese name: Baichongshuang, produced by Bayer, Germany)

Main ingredients: Imidacloprid (imidacloprid) + Permethrin (dipermethrin, the outstanding point is that it has a stronger repellent effect, the ingredients of mosquito coils and this are both pyrethroids, but this is a new generation, less toxic)

Scope of deworming: fleas and ticks - mosquitoes and flies belong to pediatrics! (Indirect prevention of heartworms)

Absorption method: The drug resides in the sebaceous glands through translocation (translocation and diffusion), and then is released through the hair tube stem.

Duration: It takes 48 hours for the drug to fully diffuse, fleas will die within 12 hours of exposure, and wall fleas will die within 24 hours of exposure. Control fleas and ticks for 1 month.

The editor has used these brands of anthelmintics and they are very effective. But the editor also likes to use Medishko’s Javelin external anthelmintic. The editor’s furry children are all small-bodied babies. This deworming medicine from Medical Science Co., Ltd. has a very sufficient dose. One small tube can be used on two dogs to make them rich, and the medicine is still effective! On time every month By using it, your dog will not be bitten by insects!

How to use insect repellent drops

First separate the hair on the dog's back to expose the skin, follow the picture below along the back (A, B, C, D) and then drip the drops in a straight line. The medicine is slowly absorbed into the skin, and its effects are felt throughout the body. Here we also need to emphasize the application site of the drops. The reason why the medicine is dropped on the dog's neck is to prevent the dog from licking it and preventing the dog from vomiting due to the stimulation of the medicine. You can pay attention to it.

Now is the period when parasites occur frequently. It only takes a few days for one parasite to turn into 100! If you haven’t dewormed your baby yet, please quickly prepare medicines to deworm. Don’t find the worms and do deworming before it is already too late. . Without further ado, this is the end of this small external deworming class. You can also comment below on what deworming medicine you use for your dog!