I often want to be able to view wolf information at a glance. Things like colors, parents, breed, etc. A lot of pet sites, and some sites besides, provide additional information like this in a "tooltip" that appears on hover, much like when we hover over things in the Mole Market. However, such tooltips can be really annoying when they don't disappear effectively, or worse, a huge pain on mobile.
So my suggestion is simple: Have a button you can click that pops up an information box, similar to a tooltip, that leaves when you click elsewhere. Easy, straightforward, will stay as long as you want and go away when you want.
As for where this could go, maybe a small button to the right of the level, or maybe in the bottom right in the same tray the other icons go in? I'm not sure. Or maybe on the left under the energy bar symbol. Either way, I think it would be a useful feature for a lot of people.