Dynalfos

Dynalfos are reptilian enemies found in The Legend of Zelda: Twilight Princess. They are far stronger than their fellow cousins, the Lizalfos. They are larger, more powerful and have more armor. The way to beat them is by counterattacking, continually using the Shield Attack on them then do a Helm Splitter about three or four times. If you think these tactics are too complicated, just shoot them with a Bomb Arrow and they go down in a second. It is very hard to perform the Ending blow to Dynalfos, because they immediately jump up when you strike them down, but it can be done, if you're fast enough.

They may be related to Dinolfos, stronger Lizalfos in Ocarina of Time and Majora's Mask with a similar name.