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Good games and bad games to play with your dog.

How to properly play tug of war with your dog. (Yes, there are rules!)

Frozen peanut butter filled kong! Keeps him busy for hours!

Once you've determined the age in dog years you can use this chart to see the equivalent in human years. How to Tell a Dog's Age If you've taken in a dog whose age is unknown, there are some ways to determine his age. Here are some things vets check to get a general sense of how old a dog is: The Teeth: Dogs usually have a set of permanent teeth by their seventh month, so if you've come across a dog with clean pearly whites, he is likely a year old or thereabouts. Yellowing on a dog's back teeth may put the dog between one and two years of age, while tartar build-up at a minimal level could mean you have a dog between 3 and 5. Missing teeth or severe wear usually means the dog is a senior and could use some special dental care. Muscle Tone: Younger dogs are more likely to have some muscle definition from their higher activity level. Older dogs are usually either a tad bonier or a little fatter from decreased activity. The Coat: A younger dog usually has a soft, fine coat, whereas an older dog tends to have thicker, coarser (and sometimes oilier) fur. A senior dog may display grays or patches of white, particularly around the snout. The Eyes: Bright, clear eyes without tearing or discharge are common in younger dogs. Cloudy or opaque eyes may mean an older dog.