Impalas are one of the most abundant savannah ungulates, but their welfare as prey animals involves chronic predation pressure, drought vulnerability, and complex herd social dynamics.
Impala herds of 10-200 individuals maintain vigilance through coordinated watchfulness; group size reduces individual predation risk. Lions, leopards, cheetahs, and wild dogs are all significant predators; impala can lose 30-40% of a herd annually. Drought causes body condition decline, reduced immunity, and increased parasite burden — significant welfare harms. Males are expelled from breeding herds during territorial periods; solitary males face higher predation risk and stress. Human activities including habitat fragmentation increase vigilance costs that reduce foraging time and body condition.