Robin is a 4-year-old male chihuahua who is aggressive towards strangers but has a wife named Chiqui. Chiqui is a 3-year-old black chihuahua who is usually peaceful but becomes aggressive when she had babies. Last year, Chiqui gave birth to 4 puppies - 3 females and 1 male, with 2 black, 1 gray, and 1 beige. Currently, Chiqui is pregnant again and is due to give birth within a week, making Robin more aggressive and protective of her.