S
WBerserk llama syndrome
WBrachycephalic airway obstructive syndromeA
WChédiak–Higashi syndrome
WEgg drop syndromeB
WEhlers–Danlos syndromes
WEquine metabolic syndromeC
WFeline hyperesthesia syndrome
WHigh-rise syndromeD
WIrritable male syndrome
WLavender foal syndromeE
WLethal white syndrome
WPorcine stress syndromeF
WWaardenburg syndrome
WWhite-nose syndrome