Spiked dog collars were used to protect dogs' throats from wolf attacks in ancient Greece.

Spiked dog collars were used to protect dogs’ throats from wolf attacks

More from the Animal Facts niche...

Animal Facts

Cats have 230 bones, while humans only have 206

Animal Facts

A puppy reaches his full size between 12 and 24 months

Animal Facts

The Basenji is the only barkless dog

Animal Facts

The U.S. has the highest dog population in the world. France has the 2nd

Animal Facts

A dog’s sense of smell is reduced by up to 40 percent when he’s

Animal Facts

Dogs can get jealous when their humans display affection toward someone