Not an unusual reaction at all!

Tehya has chronic anal gland issues. She has to be sedated to have hers done. She doesn't get knocked right out most times, but gets put into her "happy place" as my vet calls it! The only times Tehya has ever shown she might even be thinking about biting have always involved having her butt/tail examined! She hates having her tail touched for any reason!

It ends up costing much more than if she was a cooperative patient, but it's less stressful for her, me and her vet!