How a lot of eukaryotic organelles (not just the mitochondria) came from cells eating bacteria and holding onto it instead of digesting it. Cells don’t have consciousness and can’t just “decide” to not digest something because it’s useful to have around, it was probably the digestion mechanism not working properly, which normally would have decreased the cell’s fitness, but in a few rare occurrences the thing it didn’t digest was so useful it greatly increased the cell’s fitness.

Creationists

I’m quite fond of my spouse and our pet cat.

Carnivorous plants. They are always being eaten by something. Glad a few of them fought back.

crab

Birds

Amazing to think about hummingbirds as dinosaurs miniaturized to play a similar ecological role to bees

The fact that humans can’t produce Vitamin C and all other primates can

Coffee plants. I’m just an ape looking for a buzz.

orgasms.

There’s so many. It doesn’t seem to matter how many critters I learn about, there’s always another one that defies my expectations about what exists.

Edit: The most recent one was the crab-eating frog, which is unique for being a modern amphibian adapted to brackish and salt water.

Opposable thumbs. 👍

That shrimp with the bubble gun!

The game of cricket.

To think that a single hominid could dominate an entire planet thanks to its uncanny throwing ability

Mold, which can live even in space, or under very strong electromagnetic radiation

Sharks