How long are dogs pregnant in weeks?

Dogs are pregnant for about 63 days, which is measured from the day that they ovulate (release their eggs) to the day that their puppies are born. Like people, dogs are pregnant for three trimesters, each about 21 days long. read more

Towards the end of the fourth week of pregnancy, a vet or experienced breeder may be able to detect the presence of the developing puppies by gently palpating the abdomen. The eyes and spine of the foetuses begin to develop, and their faces begin to take shape. The foetuses grow to around 1.5 centimetres long during week four. read more

Her pregnancy will last between 60-64 days. After the first few weeks her appetite will reappear and she will rapidly start gaining weight. Her abdomen will thicken and be firm to the touch. Smaller breeds look larger when pregnant than bigger breeds because they have less room to carry all of their puppies. read more