This is the aptly named spider-tailed horned viper (Pseudocerastes urarachnoides) and there is a very good reason for them having such a unique tail. The spider-tailed horned viper can be found in ...

The Spider-tailed Horned Viper's Diet Like the green tree python, the spider-tailed horned viper is an ambush predator. The snake preys on unsuspecting birds and does it in the sneakiest way possible.