The adult dog
A male has finished puberty when he starts to lift his leg to urinate. A female will be out of puberty when she goes into heat for the first time; this may happen between the seventh and eighth month, but may take up to one year.
After her first heat, her diet should be changed to that of an adult. You can feed her PEDIGREE® in many different types and flavours.
The senior dog
Different breeds of dog are considered senior at different ages. It may also depend on the individual dog. The process of aging will begin slowly and nearly imperceptibly.
Your dog will become less active, his metabolism will slow down, and he might put on weight. Change his diet and give him smaller portions two to three times daily.
Your dog might need a special diet, which you can get from your veterinarian.
In general, the first signs of old age will appear between the eighth and tenth year. The head and muzzle might become grey, and he may experience a loss of sight and hearing.
Your senior dog will still love to play - even if his fitness level has somewhat declined.
If he has some little house training "accidents", he'll be quite embarrassed. So it's best not to scold him.