Love bite?

[Kettennatter]

Something slightly odd just happened. I have a female BCI, about 6 ft. in length, which has been extremely docile in the past. Always calm and non-aggressive, even during shed. But, as with most BCIs, she is a very good feeding response.

She messed up her enclosure today, and I took her out, wrapped over my shoulder. After about 10 minutes I felt a light nip on my lower right arm. It took me a second or two to realize what it was. She bit me very lightly, meaning that it doesn't hurt, but I can see teeth marks on my arm.

Now I wonder if she is sick, or what might have triggered the behavior. (There are no other indications of any sickness.) I handled our cat not that long before that, but the BCI never responded to it previously, and was just fed a large rat two days ago.

I guess I'll keep an eye on her, but it is still weird.