After seeing this question Why would an adventurer use a sword frog? I must admit I was a bit disappointed, though I understand it was a legitimate question. Understandably enough, I thought the question was about an adenturer using a frog with a sword-like tongue as a weapon.
So, now I'm making my own version of the question: Why Would An Adventurer Use A Literal Sword Frog?
Someone said this question was highly dependent on in-world information; I disagree on the grounds that most people can figure out the typical adventurer: adventurous (of course), noble and heroic or seeking fame and profit. The typical adventurer would (most likely) consider wielding a sword frog just because it's cool, but I'm not sure the benefits of the Sword Frog (information below) outweigh the drawbacks of having to not only tame and feed your weapon, but has a will of its own and won't cooperate with you all the time.
- Sword frogs range in size from the Little Grass Frog (which has a needle-sized tongue) to a goliath bullfrog (which has a broadsword-sized tongue). Regular Sword Frogs have tongues like knives.
- Sword frog's tongues can turn from rigid as steel to as flexible as you'd expect a frog tongue to be, allowing them to strike prey with their tongues and then harden the tongue so the prey can't claw or bite it off, or perhaps wind their tongue around a branch and harden it to prevent predators from cutting them down. They can also elongate (extend) and shorten (retract) their tongues, and vary the width and length of their tongue; as an example, LGFs can have a really short, wide point for a tongue or a long, thin needle-like tongue or something in between. By extension, sword frogs can also control the sharpness of their tongues, turning them from blades to bludgeons.
- Sword Frogs can understand human speech and expressions, are always hungry, usually grumpy and somewhat temperamental (DO NOT try to steal a sword frog), and can be trained to extend and retract their tongues on the press of a "button" on the frog's back. However, Sword Frogs rarely allow people to catch and wield them, instead running from or attacking them.
As always, I appreciate your input and feedback, thank you for sharing! If you see a problem, please let me know so I can fix it, and if more information is needed, let me know and I'll edit.