The First Lost Tooth (S04E01)

Melman panics when his first tooth falls out, worried that he’ll no longer be Kate's little darling. Fearing she might favor a younger, cuter creature, he embarks on a frantic adventure across the city to find his lost tooth before Kate can discover it’s missing. As he races against time, he learns about growing up and the importance of embracing change, all while maintaining his special bond with Kate.