Dogs are our longtime companions, dating back thousands of years. 

There are over 340 dog breeds worldwide, each unique. 

Dogs have an incredible sense of smell with millions of receptors. 

Their hearing can detect high-pitched sounds humans can't. 

Dogs use tail wagging to communicate their emotions. 

Dogs come in all sizes, from tiny to massive. 

They're loyal and protective, often serving as guard dogs.

Dogs are highly intelligent and trainable animals. 

They thrive on companionship and can experience separation anxiety. 

Lifespan varies, with smaller breeds living longer on average.