Most dogs that have undergone puberty or are undergoing puberty may have up to two litters per year starting from 5 to 12 months of age. Smaller or larger litter sizes are related to the various sizes of different breeds, states PetEducation.com.
A typical canine pregnancy can last anywhere from 58 to 68 days after a dog is bred, and the average litter size is six to 10 puppies, according to PetEducation.com.
A female dog may continue to experience "heat" approximately every six months until late in the dog's life, while a male may breed at will from sexual maturity to late in life, states the American Kennel Club.Learn More
Labrador retrievers generally give birth to litters of five to ten puppies, according to the American Kennel Club. Labrador retrievers live an average of 12 to 14 years, and they weigh anywhere from 55 to 80 pounds when they reach adulthood.Full Answer >
When a female dog is in heat, an intact and sexually mature male dog in the area can act anxious and aggressive towards other male dogs. He loses interest in anything except mating. A neutered male dog usually acts normally around a female dog in heat.Full Answer >
Litter size varies widely among dog breeds; Labrador retrievers average 7.6 pups per litter while German shepherds average 6.6 and American Cocker Spaniels average five as reported by the American Kennel Club, or AKC. The size of the breed can be a predictor of litter size; larger breeds tend to produce larger litters, and smaller breeds usually produce smaller litters.Full Answer >
A female dog has eight to 12 teats with 10 being the average for larger breeds. Placed evenly on either side of her chest, teats run down her trunk to her groin where the largest are found. Each teat is part of the underlying mammary gland system.Full Answer >