Gerenuk 
Goitered Gazelle 
Grants Gazelle 
Gray whale 
Greater Kudu 
Guanaco 
Guiana dolphin 
Harbour porpoise 
Hilton Head White-tailed deer 
Hinde's Dik-Dik 
Hippopotamus 
Humpback whale 
Iberian ibex 
Imbabala 
Impala 
Indian boar 
Indian Hog Deer 
Indian muntjac 
Indian Spotted Chevrotain 
Indo-Pacific bottlenose dolphin 
Indo-Pacific humpback dolphin 
Iranian red sheep 
Irrawaddy dolphin 
Javan Chevrotain