Lapling

From Memory Alpha, the free Star Trek reference

The lapling is a small, defenseless creature, which was believed to be extinct until one was found in Kivas Fajo's collection in 2366. It is characterized by large, blue compound eyes, brown skin, and a large mouth. (TNG: "The Most Toys")

Next to a pair of Corvan gilvos, models of a white rhinoceros and a Draco lizard, a life-size model of a lapling was among the exhibits in a science lab aboard the USS Enterprise-D. A special presentation for the school children about endangered and extinct animals was held there in 2368. (TNG: "New Ground")

The Lapling was a performed by a hand puppet. It bore a striking resemblance to a creature in the 1986 movie "The Flight of the Navigator", and may have been the same puppet.