The rarest color of German Shepherd is the isabella due to the recessive combination of liver and blue. You will have to search for a long time to get such a puppy – and his price will likely be high as well!

German Shepherds start teething around six weeks of age, and the process is complete by 7-8 months. This is when all the adult teeth are in place, replacing all puppy teeth. By approximately nine months, most German Shepherds will have 42 adult teeth to serve them for life.

Get a variety of toys and textures frequently. I often recommend that you rotate toys to keep them interesting. Many people make the mistake of buying 12 or more toys but don't rotate them. They give everyone of them to the dog and then wonder why the dog continues to chew their stuff.

Tennis balls and frisbees are often the cause of wear of the canines and premolars. The surface of a tennis ball is similar to fine sandpaper when dirt and grit are present. Chewing of metal cages and other hard objects may also cause attrition of the canines and the back teeth.