Despite the many endearing qualities of the Chihuahua, if you're thinking his tiny size makes him a great choice for children, you'd better think again. The Chihuahua may be just right for traveling around in a puppy purse, but he's far too small and fragile for even the gentlest of children's games.
Unfortunately, too many people with Chihuahuas allow them to become little tyrants, displaying manners that would not be acceptable in a larger dog. This dog needs gentle and consistent training from puppyhood on to control his nipping as well as any tendency he has to fight with other dogs. Like many small dogs, Chihuahuas aren't aware of their own size and won't hesitate to challenge a dog many times larger than themselves. Also, like many small dogs, Chihuahuas are difficult to house-train without a lot of consistency and patience.
Chihuahuas come in two coat types, short and long.
the long does require daily brushing to keep it from tangling and to remove dead hairs. But since there's not much dog, there's not much coat, even in the long-haired version.