Aspects of Ageing, Growth, and Reproduction of Bobcats from Wyoming

One hundred sixty-one bobcats (Lynx rufus pallescens) were collected by federal and private trappers throughout Wyoming from 1970 to 1973. The age of each was established by meristic characters of the canine teeth and cementum annuli. Maximum life span was approximately 12 years and the animals remained sexually active until death. Females reached sexual maturity within a year and were polyestrus from February to June. Litters averaged 2.8 young and most were born from 15 May to 15 June. The numbers of luteal bodies in the ovaries of older females suggested they remain as separate entities for relatively long periods, possibly throughout the life of the animal. Males were seasonally fertile, but were not sexually mature until their second year.