Mild vomiting or diarrhea that lasts more than a day.
Small amounts of blood in stool.
Mild lameness that hasn't resolved overnight.
Shaking or scratching head or trunk.
Bad breath.
Anal gland problems (scooting).
Cut or blistered footpads with only minor bleeding.
Catfight wounds, if animal is otherwise fine.
"Hotspots" - superficial skin infestions, unless severely painful.
Ear infections and hematomas (swollen ear).
Insect stings and bites causing swollen lips.
Otherwise healthy animals off-feed for more than 2 days.