Is it possible to use your raccoon tail sticker (or any other defensive sticker) instead of getting hit, and still get the accomplished goals? Basically I am asking if there's any way not to take damage during the chomp fights.
A Sponge-type thing-sticker should soak up the damage they do as they escape.
At least they did when I tried it on the Chomp Ruins' Big Chain Chomp, I admittedly haven't tested the later chomp battle.
(I also tried some of the other defense stickers to no effect. Although I did notice that being poisoned will stop the escape and thus lets you block the damage, but the battle won't end so it isn't helpful at all.) ---