Explanation: As Catholics (and some other Christian denominations) abstain from meat at certain intervals through the year, but not fish, there have been some... curious historical definitions regarding what is and is-not a fish, including from the first bishop appointed to Quebec. One might suggest a bit of motivated thinking, even...

But beavers swim and spend most of their time in the water, so who am I to question the very hungry looking clergyman?

Well, unless you want to define fish as a paraphyletic group, tetrapods are technically fish.

You can also add capybara to the list, though that’s in South America.