15 Interesting Facts About Chihuahuas

That sounds paradoxical at first: The smallest dog breed in the world has the largest dog brain. In fact, the Chihuahua has a larger brain for its body weight than its fellow dog breeds. So it's not surprising that the little guy is considered very intelligent, attentive, and curious.

The Chihuahua sometimes seems to want to prove that while it's not big, it's strong. Then he shows himself quite self-confident towards big dogs and barks at them exaggeratedly. Also, Chihuahuas can be little stubborn and have a mind of their own. With loving, consistent upbringing, however, obstinacy can be channeled constructively.

Chihuahuas often form deep human-canine bonds with their favorite humans. They love to play, train and just be together with their owners. If he doesn't get enough attention, the Chihuahua may be a bit jealous and clamor for more admiration.