At Lion Country Safari (LCS) in Loxahatchee, FL, a sub-tropical climate and the adoption of unnatural behavior by the captive giraffe herd have collided to pose a threat to the health of the giraffe (Giraffa camelopardalis). In recent years, a resilient parasite known as Haemonchus contortus has become prevalent in the pastures where the giraffe are housed and has developed resistance to many standard de-worming drugs. H. contortus feeds on the host’s blood while residing in the abomasum of ruminants