I actually thought about that and changed "enjoyed" to "usable"
Dodos were tasty and Vaquitas are cute but chickens, wheat, potatoes, rice etc. are a borderline infinite food glitch for humans compared to most food sources so they naturally get cultivated in huge numbers
Hemp / marijuana is arguably the most successful plant at this. It enjoys a high degree of biodiversity where as most plants we cultivate suffer from monoculture problems. Why is hemp / marijuana so successful? Probably because of its multiple uses. It makes strong fibers, you can make milk from it, you can make all sorts of consumer products like lip balm and hair conditioner, and you can get fucking ripped bro
See also Brassica Oleracea aka wild cabbage which we've cultivated into cabbage, broccoli, cauliflower, Brussel sprouts, collard greens, savoy cabbage, kohlrabi, gai lan.. etc
Similar is happening to Western Yews for cancer meds, I think. Whether it survives depends on how easy it is to tame if only intensive agriculture will supply the demand. And then there's the question of whether it's still the same thing -- looking at you, broiler chicken.
Poison dart frogs are not poisonous in captivity because they do not have access to the specific insects that they would eat in the wild which contain the toxins that make them poisonous.
Also
It is a common misconception that dart frogs lose their poison in captivity. In reality, they only lose their toxicity when they are exposed to certain chemicals found in captivity, such as cleaners and pesticides
Later
They acquire these toxins as they eat certain insects in their environment that contain them. So if a poison dart frog is ever relocated to an area where these insects don’t exist, it will lose its toxicity over time.
Finally...... it's fine if you're not worries about getting poisoned
Some people handle their poison dart frogs with gloves, but this isn’t necessary unless you have an open wound on your hand or you’re particularly worried about getting poisoned.
We failed evolutionarily to adapt an immunity to capsaicin. But peppers are super good for us, they are packed with vitamins. So instead we evolved a dopamine response to it that makes them more tolerable and slightly pleasing. This is why when eating something spicy, the heat gets worse after you stop eating, because you stop getting the little dopamine hits that dull the pain. It's also why people love spicy food, you actually get a little high, similar to a runners high.