At six or seven months a set of 42 teeth come in. A dog has one-sixth the number of taste buds that humans have. When a dog gets hot, it opens its mouth and lets its tongue hang out of it. This is called panting. Panting helps the dog stay cool.
Many breeds of dogs are hundreds of years old.
A new breed can be created when two pure breeds that don't belong to the same breed mate. In Japan the Akita was thought to have spiritual powers. In Egypt, dogs were sacred. They wore jeweled collars, had servants, and ate the finest food. When the owners died, the dogs were buried with them in a great tomb.