The Mexican Pet
THIS WOMAN and her husband go to Mexico. Outside their motel room, the lady notices a strange-looking small doggie. She feeds it for a couple of nights and eventually she lets the dog sleep in the room with them. She falls in love with this ugly, but adorable pooch and decides to take it home at the end of their vacation.
She carries the animal in a blanket onto a bus that is taking them to the airport. The new pet is licking her face as she snuggles with it. She notices a local older man on the bus looking at her. She asks the man if he knows what possible breed of dog she has grown to love. He tells her that it's not a dog she is cuddling, but it is actually a large type of Mexican rat.
(As told by reader "Starsxnine")