The 15 Funniest Evolutionary Adaptations

Billions of years of evolution have given rise to us millions of species Which still exists on planet Earth. Some of us are small, some of us are big, and some of us have pointed ears, flat tails, compound eyes, or infrared vision. Each of these adaptations has its own merits, but in my (purely scientific) opinion, only a few of them can be considered the most fun.

I consider these to be the 15 most delightful inventions evolution has given existing species. Please let me know what organism or physical characteristics I have overlooked.