The crocodile muzzle: An experimental method for pacifying captured crocodilians

Crocodilians are predatory, semi-aquatic reptiles which vary in size, morphology, behaviour and ecology. Yet, all species pose certain challenges to capture for research or re-location purposes. Capture and handling techniques are therefore critical to ensure safety of both the crocodilian and the capture team. There are many capture methods documented for crocodilians, each with its own merits, including snares, catch poles, tongs, nooses, harpoons, traps and nets. Post-capture requires crocodilians to remain relatively calm for physical examination or data capture to occur. Here we document a method of reducing stress and improving pacification of crocodilians without the use of drugs. The technique involves reducing sensory stimuli through the application of a muzzle, reducing vision, hearing and stress from touching sensitive facial domed pressure receptors. The muzzle also serves as a jaw restraint, preventing potential bite injury to capture teams.Citation: Prodromou, P. & Lewis, T.R. (2013). The crocodile muzzle: an experimental method of pacifying captured crocodilians. Crocodile Specialist Group Newsletter 32(4): 30-32.