Therese, your guinea pig might be unable to eat or swallow due to toothproblems. Please check out the website www.guineapig-and-rabbit.us.tc and click on teethproblems and force feeding. You need to find a vet that knows how to check the teeth, or the piggy will starve to death in a hurry. good luck, Marion ps. Let me know if I can be of any further help.