Battle Pets with the Hiss ability: Undercity Cockroach Death's Head Cockroach Tol'vir Scarab Deepholm Cockroach Crystal Beetle Coral Adder Temple Snake Grove Viper Emerald Boa Adder Nether Roach Sand Scarab Savory Beetle Zooey Snake Resilient Roach Son of Sethe Fire-Proof Roach Slithering Brownscale Cavern Moccasin Spawn of Merektha Sandshell Chitterer Deathsting Scorpid Hissing Chitterspine Junkheap Roach Bonebiter Hissing Deathroach Metallic Scarabid Emerald Scarabid Archetype of Cunning Red Viperid Locust Scarab Hatchling Albino Snake Roach Black Kingsnake Brown Snake Crimson Snake Cobra Hatchling Tiny Flamefly Snake Cockroach Rat Snake Tree Python Beetle Fire Beetle Water Snake Moccasin Ash Viper Sidewinder Lava Beetle Gold Beetle Rattlesnake King Snake Irradiated Roach Dung Beetle Creepy Crawly Twilight Beetle Rock Viper Coral Snake Stinkbug Silithid Hatchling Tainted Cockroach Viperid Menace