Kosh, voiced by Pete Sepenuk, is a character who appears in The Star Day Celebration, an episode of the television series. He is an Ankylosaurus, which is referred to as a "Clubtail" by the Land Before Time characters.
When Littlefoot and his friends arrive at a sweet bubble (grape) patch to collect some for a downtrodden Ruby, Kosh, who is already dining on the fruit, initially refuses to share any with them. When Ducky states that they need them for Ruby's Star Day (birthday) celebration, he changes his mind, and even allows them to have some for themselves.
Main Article: Kosh/Gallery