Well my mom's best friend has just been diagnosed with cancer. She can't take care of the dog because she has to be at the hospital days at a time, and she can't afford to keep paying a dog sitter to watch her dog. So my mom volunteered to watch her dog and find Bear ( That's the dog's name ) a new home. I currently have 3 chihuahuas, and they aren't the, um, how do you say, the friendliest to other dogs. They won't attack the dog, but they WILL keep the dog away from their stuff. And my grandmother's dog will not yet the dog eat. I was thinking of introducing them at the park. Do you think I should do that? Any other tips are appreciated.