I was at work and my door was closed. My sister opened the door and the cat got in and was pawing at it. The cat broke open the roof and attacked gecko's tail and took his leg clean off! What kind of first aid should I do?
If it is a big wound, like that seems to be, I would use neosporin and some clean gauze or cloth to try to stop the bleeding. Neosporin is safe to use on beardies and snakes, so I assume it is for them too. You will probably want to try drying the wound after you have cleaned it, and take it to the vet as fast as possible.