The only time Cooper barks is when he needs to go outside to take care of business, then he gives one good bark and waits.
Otherwise, he doesn't bark at all.
Tell your mother that the reason she sees/hears about yippy and nippy chihuahuas is because people don't socialize them when they're puppies. All dogs would bark and nip without socialization as a pup. The stereotypical behavior of a Chihuahua is NOT the dog - it's the owner not socializing the chi.
Of course, make her make you promise to take it out and socialize it before she makes the deal with you. You don't want to end up with a yippy, snippy dog.
