Dogs are capable of giving birth up until their death because, unlike humans, dogs do not experience menopause in old age. Different breeds have different life spans, so the number of litters possible over a lifetime dep... More »

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. Th... More »

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... 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 ... More »

Great Pyrenees typically give birth to litters of between six and 12 puppies. For a breed like the Great Pyrenees that can grow larger than 100 pounds, this range is typical. More »

Tickling is still poorly understood by science, but it doesn't appear that dogs are ticklish like humans. However, dogs do have a well-known reflex, called the scratch reflex, which triggers them to twitch a leg when tou... More »

Dogs dream during the REM phase of sleep, just like humans. There is evidence that they dream about their daily activities. They often twitch, vocalize and breathe differently while dreaming. More »