Pregnancy signs in dogs vary by term of the pregnancy and may include the dogs not being hungry as often and being exhausted during the early stages, notes WebMD. As the pregnancy progresses to the midterm, the dog might... More »

The average length of a dog pregnancy is approximately 63 days, or two months. The due date can be about one week on either side of the predicted length. There are also other things that factor into a pregnancy length. More » Pets & Animals Animal Reproduction

Dogs give birth between 57 and 65 days after mating, according to VCA Animal Hospitals. The average length of gestation is 63 days. Early in the pregnancy many dogs show signs of decreased appetite and energy, nipple gro... More »

According to PetMD, phantom pregnancy in dogs, also known as false pregnancy or pseudopregnancy, is most likely caused by hormonal imbalances, especially of progesterone and prolactin. The female dog starts showing pregn... More » Pets & Animals Animal Reproduction

Being in heat is a colloquial term for the estrus cycle in female dogs, so male dogs do not come into heat but instead are always fertile. Male dogs who are exposed to female dogs in heat might attempt to escape from the... More »

In the early stages of heartworm disease, a dog displays few symptoms, but as the parasites grow and multiply, it starts to develop a persistent cough, fatigue, decreased appetite and weight loss. It may become reluctant... More » Pets & Animals Pets Dogs

When a male dog and bitch are willing to breed, it is OK to breed them every other day. Owners should ensure their dogs are healthy and at an appropriate age before breeding. More »