Pokémon (1997)

S11E13 Sleight of Sand!

While the heroes' Pokémon are joyfully playing in a sandpit, a Hippowdon emerges unexpectedly. The inquisitive Pachirisu, unable to resist, leans in to take a closer look at the Hippowdon's mouth and accidentally tumbles inside. Things take a turn for the worse when Team Rocket's Butch and Cassidy set their sights on the Hippowdon, putting everyone in a precarious situation.