I once helped to train a puppy to be a seeing eye dog and it was most interesting to learn what it involves. Those dogs are really trained to perfection!
Dogs naturally have a wonderful sense of smell. They have many more sensory 'smelling' cells than a man's.
The oldest reliable age recorded for a dog is 29 years, 5 months for a Queensland 'heeler' called Bluey in Victoria, Australia.
The average dog lives to around 15 years of age.
The tallest dogs are the Great Dane and the Irish Wolfhound.
Puppies cannot control their bladders overnight until they are at least four months old. Until then, you should cover the floor around the puppy's bed with newspapers.
A one-year-old dog is physically as mature as a 15 year old human.