How many times does a dog go into heat?

Small dogs will tend to go into heat more frequently, as much as three or four times a year. Very large breeds, like Great Danes and St. Bernards among others, may only go into heat every twelve months. The estrus cycle usually lasts an average of three weeks, although this can vary from 2-4 weeks. read more

Dogs don't have periods they have heat cycles. And yes they do have to be in heat to get pregnant. Dogs usually go into heat about every 6-9 months. You don't sound like you know much about this. So don't breed your dog. Get her spayed. You won't have to worry about it. Makes her live a longer, healthier life. read more

Most dogs come into heat twice per year, or about every six months, although the interval can vary between breeds, and from dog to dog. Small breed dogs may cycle three times per year, while giant breed dogs may only cycle once every 12-18 months. read more

Your dog has come into heat It is most common for the dam to come into heat at six months of age and then every six months thereafter. Some dams come in at four months and some at twelve months for their first heat, while some are every six months and some every five to 11 months. read more