Gus loves to eat tree limbs that fall on the ground, problem is after a while he starts to puke tree bark. I have had him to the vet which tells me he is allergic to something. We have been going through a spell where he would puke every night. We switched him to non allergenic dog food and he would do go but as soon as we would switch back it would start backup. I think I have finally found a dog food he can hold down. He can't have any toys because he shreds them and detroys them quicker then I can blink. I feed him twice a day, 3 cups in the morning and 3 cups in the afternoon but he won't puke till in the middle night. Does anyone else have problems with their boxers puking or eating sticks. How to I make him feel better and gain weight. He is 2 and weights 56lbs but you can see his ribs. Is this normal?