While it's not possible to determine precisely how old a dog is, it is possible to make a fairly accurate estimate of its age by examining the condition of the dog's teeth. In addition, a veterinarian may be able to prov... More »

Six to nine months is the traditional age before neutering is acceptable, although eight weeks is sufficient if the puppy is in good health. Neutering older dogs carries a risk of medical complications if the animal is o... More »

Female dogs experience their first reproductive cycle, or heat, when they are between six months and two years old, explains WebVet. The female dog can become pregnant during her first heat. Whitney Veterinary Hospital r... More »

A person can tell how old a dog is by looking at the dog's teeth, which means that it is easier to tell a puppy's age than it is to tell an adult dog's age. When looking at the puppy or dog's mouth, look at the way that... More »

Although female dogs start going into heat at the age of 6 months, they should not be bred until their second season, which is usually six months later. Males reach sexual maturity sometime between the ages of 12 to 15 m... More »

The amount of food to feed a dog varies depending on the dog's age, activity level, size and type of food. Puppies typically require more food than adult dogs because of the amount of calories they burn. Commercial dog f... More »

Adult dogs have 21 teeth in each jaw for a total of 42 teeth. Puppies have 14 teeth in each jaw and 28 total teeth until they shed their milk teeth for adult dentition. More »