A housetrained Chihuahua is worth her weight in gold. A dog that lacks housetraining skills — or has recurring accidents — is a common gripe among toy breed owners, Chihuahua owners included. But it doesn't have to be. If you take the correct approach to housetraining your puppy or adult Chi, and you have a little patience, your Chihuahua can be as good as gold when it comes to knowing when and where to relieve herself.