Primates

With their punk hairstyles and bright colors, marmosets and tamarins are among the most attractive primates on earth. These fast-moving, lightweight animals live in the rainforests of South America. Their small size [blank] it easy for them to dart about the trees, catching insects and small animals such as lizards, frogs, and snails. Marmosets have another unusual food [blank] - they use their chisel-like incisor teeth to dig into tree bark and lap up the gummy sap that seeps out, leaving telltale, oval-shaped [blank] in the [blank] when they have finished. But as vast tracts of rainforest are cleared for plantations and cattle ranches, marmosets and tamarins are in serious [blank] of extinction.