My poor baby dumeril's boa had to have daily injections for 3 weeks out of the approximately two months I've had her. Not once did she show any signs of aggression. To make things even harder for her, she shed during the first week and was back in shed by the third week. She was still friendly every time we took her out for injections, likes to climb up arms, flick tongue at faces, etc. The only thing she did was frequently try to pee on us post-injection to show her displeasure.
Despite the fact that every interaction with us ended in a negative stimuli for weeks and she hadn't really had any interactions with us before that since she wasn't eating consistently, she has still been an extremely pleasant tempered snake. Every snake is an individual but if she's at all representative, they deserve their reputation as one of the best tempered species. Right now we're letting her shed before we handle her again, but she's beautiful and a pleasure to interact with.
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