How do Deer Get Tumors?


Whitetail Deer with Warts (Firbroma)

Whitetail hunters sometimes encounter deer with warts or lumps on the skin. These bumps do not hurt the deer since they are usually non-cancerous tumors called either fibromas or papillomas. In both cases, the warts or tumors are caused by viruses. The difference between the two is that fibromas grow either from the skin or from the layer beneath, while papillomas grow only from the skin.

To a hunter, both lumps will look dark-colored and hard to the touch. These external warts generally do not cause problems for afflicted animal, but they are not pretty to look at. Deer hunters often think the meat is inedible because of these tumors, but that is not the case. Since lumps are usually found only in the skin, not in the muscles, there is generally no problem.

However, there could be tumors located inside a deer’s body, such as on it’s organs, that could be cancerous and the venison should be discarded. While whitetail hunting, do not be overly alarmed if you come across an animal with external tumors because they are not uncommon.

Tumors in White-tailed Deer?

Deer with tumors

Question: I came across a photo of a deer with horrible tumors on it’s neck. I’ve seen deer that looked like they had internal tumors on their neck and around their jaw, but the tumors in this photo are huge and external. What is the deal with this deer’s tumors? Is it cancer?

Answer: Wow, that is a lot of tumors on that deer. I’ve never seen a deer that looked that bad off, so I did some looking around and this is what I found. The deer was obviously shot, but I suspect that it would have died either directly from the tumors or from complications because of the tumors.

Source: I’ve never seen tumors that agressive before. And that deer seems to be pretty young, and the tumors seem to have developed at a pretty agressive rate. From what I know about tumors, these cutaneous growths can be malignant and the result of a cancer similar to BPV. It is true that these tumors will somtimes slowly heal somewhat, often times they will eventually kill the deer by blocking their mouth, nose, or eyes.

If the growths around this deer’s mouth get higher or bigger, I think they could easiliy interfere with it’s ability to eat food, resulting in a slow and pianful starvation. Because of this large chance (and the remote possibility of complete healing) I would suggest harvesting this animal. Personally, I would not suggest consuming the meat. Its true that these fibromasts can be contained to the skin, but sometimes they are the result of internal problems. There is no way to know without an autopsy by a trained professional. I think the deer would be more valuable if you donated it to a vet school or research center.