These feisty little pups unfortunately are often purchased as accessory dogs before ending up in animal shelters because of the level of care and attention they need. If you are considering bringing one into your home, know that Chihuahuas typically weigh about 6 pounds but have big personalities. Don’t be fooled by their size. According to dogtime.com, they are among the top 10 watchdogs recommended by experts. They love their humans and require minimal grooming and limited exercise.