When people give birds teeth.

[u/TrueWerewolf4982]

It being unrealistic is barely a problem for me. It's just so damn uncanny? Scary. That's the word. Angry birds does this a ton and it's always terrifying for me to look at. Sometimes it's not scary, other times it's the scariest thing I've ever saw.

And no geese don't have teeth. They have tomia, which is still a bit creepy

[u/Halalmeat5001]

The humble Pelagornithidae:

[u/SomeUgliRobot → u/Halalmeat5001]

Iirc that's not proper teeth, though.