Tickles is the first named mammal in The Land Before Time film series. He is of unknown species (perhaps a mouse or rat not an opossum) and was so named because he, in Ducky's words, had "tickly fuzzies all over him." He appears in The Land Before Time IV: Journey Through the Mists. He is very intelligent and very brave, but unable to speak except through high-pitched squeaks, which are translated via his body language. His mute but brave nature makes him very relatable to Spike.