Lady Mary's mom says: Lady Mary is a teacup Chihuahua/Jack Russell terrier. We got her from a rescue home when she was three weeks old after her mom died. Due to a bad fall at four weeks, she is (the vet swears temporarily) blind. She, however, doesn't realize this and runs around and plays just like a sighted puppy, except for occasionally running into things. She loves to be held and goes everywhere with us as she is still on the bottle.