A deer with a weirdly swollen nose was found in Michigan this season. It was the fourth deer ever found in Michigan with a similar swelling, according to a wildlife biologist and pathologist with the Michigan Department of Natural Resources Wildlife Disease Lab quoted in an article in the Kalamazoo Gazette. The pathologist also says in the article that the only thing the deer have in common is an infection with the mites that cause mange.

Keel said in his blog post that in the last seven years he’s seen about 10 of these deer from states ranging from Georgia to Idaho. What causes the nasal swelling is still a mystery. The Kalamazoo Gazette article says that a bacterial infection seems likely, but the Athens lab hasn’t been able to isolate it yet.

It may turn out that there may be more of these deer out there than anyone thought. Just a week after the first posting, someone else sent a photo of a swollen-nosed deer to the same hunting blog.

Here’s the Kalamazoo Gazette article that first discussed the deer.