| HYL | type genus of the Hylidae |
|---|---|
| HYL | small chiefly ground dweller that stays within easy jumping distance of water |
| HYL | small brown tree toad having a shrill call heard near wetlands of eastern United States and Canada in early spring |
| HYL | most commonly heard frog on the Pacific coast of America |
| HYL | barking frogs |
| HYL | of southwest United States and Mexico |
| HYL | tree frogs |
| HYL | gibbons |
| HYL | smallest and most perfectly anthropoid arboreal ape having long arms and no tail |
| HYL | large black gibbon of Sumatra having the 2nd and 3rd toes partially united by a web |
| HYL | used in some classifications for the lesser apes (gibbons and siamangs) |
| HYL | genus of climbing or epiphytic tropical American cacti with angular stems and mostly white very fragrant flowers |