Labrador Retrievers are the most popular dog breed in the United States.
Jane Goodall went to Africa to study chimpanzees for 50 years.
Horns, hooves, antlers, bird beaks, and fingernails are all made of keratin.
Beagles make a special sound when they are hunting to let the hunter know they have found prey and are tracking it down.
One of the most popular pet dogs in Japan is the Shiba Inu
Terry, the dog that played the role Toto in The Wizard of Oz, was a Cairn Terrier.
In a pack of wolves, shy dogs go in the middle of the pack to feel safe, while look-out dogs stay in the back with the older wolves.
Otterhounds are rarer than the giant panda. Worldwide, a dog breed is rarer than a giant panda.
Malta's national dog breed is the Pharoan Hound.
North Carolina's state dog is the Plott.