We don't really know where the phrase came from. My guess is that they're things from nature that alliterate, which makes it sound cute and innocent.
stray
But bananas are berries. It's fun to learn things.
I would. I think that just goes to show how informal and unworthy of policing the term is. We even call viruses bugs a lot of the time.
I don't know if you saw Johandea's reply to me, but it made me realize I was mistaken about what you meant.
I love opening cans of dinosaurs. :D
It took me a bit to understand what you mean, but I get it now! I was looking at it from the perspective of them being quite similar, but they are as different, aren't they?
Pluto used to be considered a planet, but I'm not going to tell people it is one today. Pisces as a class was abandoned due to the realization that we were mistaken about how similar/related they are to each other. Whales used to be included in pisces.
Not exactly. Humans, birds, and reptiles are all within the phylum chordata, while arachnids and insects are both within the phylum arthropoda.
Fish, interestingly, aren't a real thing in terms of formal classification. The term is similar to bug in that we apply it to whichever creatures we feel fit the description.
Yes, they're arachnids.
https://en.wikipedia.org/wiki/Arachnid
Both insects and arachnids are arthropods.
The ocean is quite literally lousy with sea lice. They've even got rolly-pollies down there.
You can find "leftenant" as a normal spelling in older texts. No one is sure why.

Well, it taught me that berries have a strict botanical meaning rather than just being and cute little fruit on a bush, and that there can be multiple meanings for a word based on context. There's nothing wrong with calling a strawberry a berry even while understanding it's not really a berry. Correctness is important in formal discussions, but we can have fun being intentionally wrong in everyday speech where poetry and history hold more value.
From there one asks, "What is a berry? What about a banana makes it a berry? And what is a strawberry if not a berry?" And so one reads and one learns. "What about a raspberry? What about grapes?" The internet is as forthcoming with answers as one's brain is with questions.