After searching for wolves, I've encountered a wolf in the rain and it repeated the shaking animation when wet from swimming. It kept doing that animation causing the wold to look glitcjy and twitchy. Yet when under cover, the animation continues and finish.
Thank you for your report!
We're actually already tracking this issue at MCPE-33869, so we will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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