Ducky notices something the sequel animators didnt "You are a Spiketail, so we will call you 'Spike'."
The subject(s) detailed in this article has/have been given a conjectural (and, as a result, unofficial) name, due to the lack of an official name for the article subject(s) to be referred to by.

The "rocks that look like Yellow Bellies" (simply referred to as "a big pile of rocks that look just like us" by Loofah) is a location in The Land Before Time XIII: The Wisdom of Friends. It was where Loofah, Doofah, and Foobie were supposed to meet the other Yellow Bellies in their herd.