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 stages of pregnancy are called the first, second and third trimester, according to MedicineNet. The first trimester takes place from conception to about 12 weeks, the second begins at week 13 and lasts until week 27,... More »

www.reference.com Health Women's Health Pregnancy

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 »

www.reference.com 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 »

www.reference.com 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 »