Here's a very partial list of words that are adjectives for different types of animals and birds:

corvine (crows), eagles (aquilline), robin (turdine - seriously), simian (ape), ursine (bear), buffalo (bubaline), bull (taurine), feline (cat), galline (chicken), bovine (cow), cancrine (crab), canine (dog), pulicine (flea), and [drumroll] pteropine (flying fox!).

Whoa - flying fox!! Foxes fly? As a matter of fact, yes, some very cute, insect-eating ones in Australia do.

What did one eye say to the other?

"Something next to you smells."

Whoa rhymes with woe. But while woe involves sadness, whoa means wow. While, "Wow!" is a fitting response to many events, it's pretty much never associated with sadness.

But where does whoa come from? Like many of the words we talk about here, whoa comes from Middle English. It's a variation of ho.

Mussel, which is the homonym for muscle, actually comes from the same root, the Latin word for - you guessed it - muscles!

Mussels are golden bivalves with black shells that people can eat. You find them clinging to rocks near the shore or in the bed of some rivers.

Did I try and slip 'bivalve' past you? Uh, sorry! Bivalves are marine animals with hinged shells. Some have digging feet, like clams. Some can swim, like scallops. Some attach to surfaces, like mussels.

 High is a hard-working word: it's an adjective, a noun and an adverb. It also ends in 'gh', like laugh or neigh. Have you ever wondered where that 'gh' came from. Feels like an appendix, doesn't it - like, you have one, but you don't really need it, but maybe it served some vital purpose way in the past. Well, the 'gh' at the end of an English word actually used to be pronounced! The sound it makes (called a voiceless velar fricative for anyone needing some trivia to torture a younger sibling with) is like a cross between a 'ka' and a 'ha'. It is a sound used in Gaelic, whence many of our modern English words derive.