The grasshopper mouse of the Sonoran Desert is a fearsome nighttime predator but survival in the daytime isn't certain; the home of a young sengi is destroyed by a raging bush fire.

A tree shrew and a tarsier display quick wits and cunning as they search for food; a chipmunk races against time to collect enough nuts to last the winter.

A tiny marmoset gets caught in traffic in the middle of Rio de Janeiro; a rhinoceros beetle loses a fight.