Highly venomous viper of northern Africa and southwestern Asia having a horny spine above each eye.

synoniemen: cerastes, Cerastes cornutus, horned asp, horned viper.

Pools: żmija nosoroga

Harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed.

synoniemen: hognose snake, puff adder.

Pools: heterodon płaskonosy