ok, so my mom has two tiny paws (one chihuahua that weighs less than 3lbs, and one that is around 10-12) neither are overweight, in fact, the smallest has a high tendency to get skinny. the oldest is 10 years old this past november, the youngest is like 6 or 7. my mom only feeds them once a day, which i notice doesn't do good for the smallest, because he uses up so much energy and then just sleeps alllllllllllll lll day. when i'm there i feed them twice a day, and they do awesome. the question i have is, my mom's vet tells her they're too heavy, and that she only needs to feed them enough to make them not "feel" hungry, but they should still be asking her for more food. i don't understand this! he's also the reason they get fed once a day. right now the smallest gets 1/4 of one of those square "canned" dog foods, and the biggest gets one. what's everyone's opinion on this?? i know tiny paws don't eat as much as my big paws, but this just seems like it isn't enough, they both beg me the entire time i eat, whenever i eat.