What is this?

Quote:

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Originally Posted by Bogertophis

Hmm, I never knew snakes could give or get hickeys? ;)

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Rub a rat on your neck and I can assure you mine will give you a hickey. :P

It looks like a bruise to me rather than anything more serious.

If that is not what you expected then I'd say you are entitled to a refund, replacement or at least some $$ off.