Has anyone had a rat that grew an extra tooth? Yes I am serious lol. A few months ago my astra what I thought cracked her tooth. I guess that wasn't the case, because last night I could clearly see an extra tooth on top and it was white. It was a snaggle tooth so I had to trim it for her. Quite strange if you ask me, she's eating fine so that is good. I guess It could be genetic she has peds, but the litter she was from had a lot of problems. She's over 2 years old also.