“The results revealed that 13 of 17 ants with injuries on their femur or thigh underwent amputation by their nest mates, with their limb severed at the trochanter”
Florida carpenter ants amputate thigh wounds and only lick lower-leg wounds. None of the nine tibia injuries got cut. Lower-leg infections spread through the body too fast for amputation to help, so the ants skip it. That is triage, done by an insect with no medical school debt.