Very useful! Easiest thing to knock out and tame, they act differently depending on the future weather (I.E. digging at the ground means a heatwave, barking/chirping is a sandstorm, growling w/ fluffy tail is a thunderstorm, and hugging their tail means good ole rain), their inventory weighs half when they're being carried, and most importantly, they look cute af when wearing hats.
Warns you what storm is coming, and when. If it makes a chirping kinda noise to the sky, it's a sandstorm. If it tries to bury it's head in the ground and shakes it's head, it's a superheat. If it shakes it's tail and growls, lightning storm.