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.
DO NOT believe that this reduces weight on its inventory. As of today AUG 2020 I tested stacks of meats and berries etc, IT DOESNT. But instead it increases spoil timer of foods, meats and berries on its inventory. ⬆️ to prevent ppl from false informations!