Stitch: "Naga shots! Ouchie!"

After getting a letter from the animal shelter where he was adopted saying that it's time to get his shots, Stitch runs away from Lilo and does everything he can to prevent her from taking him to the shelter for his shots, going as far as to take a shower despite his fear of water (which doesn't work as Lilo invokes Flushing Toilet, Screaming Shower to get him out). Then again, considering how the UGF got his DNA to track him in his holding cell in the original movie, it's no surprise why he doesn't want a needle in him again.

Example of:
Afraid of Needles