Rayboo

Rayboo were creatures that lived on the barren ice planet of Hoth. They were hunted by wampas.

Behind the scenes
Rayboo were first referenced in the Star Wars Legends reference book The New Essential Guide to Alien Species. For official Star Wars canon, the sounds of rayboo were created for the 2015 video game Star Wars Battlefront. The particular sound was based on recordings of elks.