You say he is eating "like a horse". How much and how often do you feed him? Does Bear have any "siblings" that might be snatching some of his kibble?
This happened to my precious little Peppy before he came home. The person he was staying with had several dogs and at the time Peppy was a "fussy" eater. Before he would eat a bite, he would toss the kibble and run to get it, but before he could get his kibble one of the other dogs would scarf it up. Peppy lost almost 3/4 lb. this way. He went from 3.25 lbs. down to 2 1/2 lbs. before the problem was discovered.
I agree that a trip to his vet for a thorough exam is in order. |