I looked at your fur babies and almost thought they were mine! I have a rat terrior(yes, that's spelled right. LOL), a chiweenie named Timmy(that weighs 15 lbs) and babysitting my son's dog, Chiquita, the chachuchua. Chewie, the rat terrior, is the youngest of the bunch. How ever, unlike your dogs, if Timmy doesn't know you, he will bite. He goes for the seat of the pants and that throws people off, because they expect him to go for the ankles. LOL Don't you just love them to peices? LOL