Why doesn't Warwick Q deal % damage to monsters?

So I was playing a game as warwick a couple days ago and I actually looked at his ability descriptions for once and I realized his Q doesn't have the option to do % damage to monsters, only whatever the flat value is. It seems weird that a jungle champ has components of abilities that specifically don't work in the jungle.

Other champs also have % damage in their kits that hit jungle monsters, albeit usually capped.

second Q - % missing HP - capped at 400 W - % max HP - capped at 300 W empowered auto - % max HP - don't think it's capped since the auto is ALL % damage, no flat component. W empowered auto - % max HP - capped at 300 W - % max HP - capped at 200

Given that WW was the baby thrown out with the bathwater when challenging smite and devourer was fuckin broken, he could probably use a little love, since even with Sated Devourer I haven't seen WW like... at all. Maybe give him his % damage to monsters with a cap.