Lexie usually only gets bad scrapes from running in the yard after squirrels ( we have a lot of mulch that I think kicks up) Twice she needed stitches, once from running in the winter in the ice and slid into an outside lamp. The other time was playing with a dog and the dog had on one of those metal collars and we think it open her skin up by her leg when lexie jumped over the dog. You can't really determine how often but as long as u keep the first aid on hand u will feel more prepared if something does occur.