How do you know when a dog is in heat?

Know when to check for signs of heat. In a year, a dog will usually go into heat twice with an average interval of six months in between each heat, depending on the breed. This can help you decide if it's likely she's in heat. Dogs are usually in heat for three to four weeks. read more

Estrus, or heat, is the stage in a female dog's reproductive cycle during which she becomes receptive to mating with males. At this time, estrogen levels first increase and then sharply decrease, and mature eggs are released from the ovaries. read more

This is a good indicator that your dog is in heat. Although this is not foolproof and you need to interpret this in the context of the dog's physical changes and the male dog's usual behavior when kept apart from his female pal. read more

This stage of dog heat can last from 4-20 days. The average is 7-10 days. There are 3 common signs for a dog in heat during this stage: Swollen Vulva: This is one of the best ways to spot the beginning of a dog heat cycle. read more