Gomez, A.; Jewell, E.; Walker, S.L.; Brown, J.L. 2004. Use of salivary steroid analyses to assess ovarian cycles in an Indian rhinoceros at the National Zoological Park. Zoo Biology 23 (6): 501-512, figs. 1-5. { copied = true; setTimeout(() => copied = false, 10000); }).catch(err => { console.error('Failed to copy:', err); }); " type="button" :class="copied ? 'bg-secondary border-secondary' : 'border-primary hover:bg-primary'" class="group min-w-64 flex items-center justify-between gap-5 border border-solid px-5 py-2 cursor-pointer transition-colors"> PDF download available