The first animal I tamed rewarded me with the achievement BFF, but also the ACC one, which has nothing to do with wolves, as the description states "Tame all cat variants!"
I've succesfully recreated this bug in another world, and it seems to only work when it is a wolf. It even works after you've tamed a cat.
Obs.: ALl tests were conducted in survival mode
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Thank you for your report!
However, this issue is a Duplicate of MC-138541.
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