Butterscotch is a very cute, 4 year old, Guinea Pig that was brought in to see us because he was losing weight and having trouble eating his food. On examination we found that his teeth had grown over his tongue- entrapping it so that he could not use it to manipulate his food! Poor Butterscotch was hungry but he could not get the food into his mouth. Under a general anesthetic we could have a good look at his teeth; his lower molars were trimmed and filed back. At the time we also found a rotten tooth, which was causing pain, and removed it. We are happy to report that Butterscotch is so much happier now that he can eat well again, and does not have any more pain. Not all rodents need teeth trimming, only those who have malocclusions, like Butterscotch. We will now be routinely checking and filing his teeth to keep him happy and healthy.