I have a cat that is 2 years old. I noticed in November of 2011 that my cat had some kind of sore on the padding of his foot. I was very concerned so I brought him to the vet. At that point and time they had never seen anything like it and the best thing they could come up with that would cause this was that he might have stepped on the stove element. I noticed last week that it had gotten significantly bigger so I took a picture and brought him to the vet again yesterday. The sore on the padding of his toe fell off but the one on the bigger portion of the padding is still there. His toe is not really pink anymore it's more yellow/ orangish ever since the sore fell off. It looks like a callus and it is a brownish/ yellow color, completly dried out, no puss. When he was sleeping I touched it to see if it cause him any discomfort and he was fine, but when he's grooming himself his constantly knawing at it. My vet yesterday had strongly recommended that I get a biopsy to find out what it is (if they can find out). I was all for it, until I found out it was almost a thousand dollars that I do not have at the moment. I'm just very scared that if I don't do anything about it now that it could develope into something bigger but at the same time I cannot afford it. Do you think it is something worth getting a biopsy for? Please help! I love my cat to pieces and I don't want anything more to come out of this. Thank you for your time and help!