Caudal autotomy (tail shedding) is a defence mechanism against predation which is used by lizards when other tactics, such as crypsis and escape, prove ineffective. The speed at which autotomy occurs has important implications for survival, and the accuracy of tail loss is of consequence for an individual s future fitness.
Hare, K., & Miller, K. (2010). Frequency of tail loss does not reflect innate predisposition in temperate New Zealand lizards. Naturwissenschaften, 97(2), 197 - 203. https://doi.org/10.1007/s00114-009-0628-4