The reasons why dogs have black tongues are as follows:

1. Breed. Some breeds, such as Chow Chow, have black tongues. Dogs of other breeds bred with Chow Chows may also have black tongues. .

2. Melanin precipitation. Due to melanin precipitation, a small number of black spots will appear on the dog’s tongue. At this time, you should pay more attention to the dog's condition. If there are no abnormalities, it means melanin precipitation has occurred.

3. Severe anger, or caused by mixed emotions. Broad-spectrum antibiotics are used to cause black moss, which causes a dog's tongue to turn black. For dogs, a black tongue means that the dog is weak and needs to supplement nutrition in daily life.

4. Hypoxia, poisoning or other diseases. Dogs are caused by hypoxia, poisoning or other diseases. In hot summer weather, dogs in sultry environments or strenuous exercise can cause heat stroke and black tongues. , it is recommended to take the dog to a cool and ventilated place and rest for a period of time. Dogs in confined spaces or carbon monoxide poisoning and other reasons cause dogs to lack oxygen, causing their tongues to turn black.

Tips about dogs’ tongues

1. Not all dogs’ tongues are pink. For most dogs, tongues are normal and healthy. It's pink and moist enough to drool, but there are two dogs from China, the Chow Chow and the Shar Pei, whose tongues are blue or blue-black. Hybrids of these breeds may also have bluish-black tongues or bluish-black spots on the tongues.

2. Dog tongue has a calming effect: Check for relevant information. When a dog licks something with its tongue, it will stimulate the brain to release a hormone and endorphins. This hormone is a neurotransmitter that makes dogs feel calmer and more relaxed. But if a dog licks its owner or themselves excessively, it could be an anxiety issue.

3. A dog’s tongue can regulate temperature. When dogs pant with their tongues, they speed up the flow of air over their tongues, which causes water to evaporate and cool down through their mouths and lungs, thereby regulating their body temperature.