Research overview: habituation and the limits of sensory deterrents for big cats

This overview synthesises evidence on why deterrents, lights, sirens, scent, and visual scarecrows, often lose effectiveness as predators habituate. It examines the behavioural ecology of neophobia and learning in big cats, the difference between novelty-driven avoidance and durable aversion, and design strategies to delay habituation such as randomising stimuli, combining modalities, and linking deterrents to genuine negative consequences. Drawing on livestock-protection trials across lion, leopard, puma, and jaguar systems, the survey argues that no single sensory deterrent provides lasting protection and that deterrents work best as one layer within husbandry-based defence. It highlights the scarcity of rigorous long-term efficacy data.