The birth of dogs is the same as that of humans. Female dogs go into estrus twice a year, and male dogs go into estrus when the female dog goes into estrus. Generally, female dogs will give birth to litters two months after pregnancy. If the female dog often goes into estrus without Mating is very likely to cause diseases such as pyometra, so if parents do not want the female dog to give birth to puppies, it is best to neuter it in time.

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When mating female dogs, it is best to choose dogs of the same breed to avoid genetically unstable and genetically defective puppies, and the size of the male dog cannot be The difference is too big to avoid dystocia.