Yellow-backed duiker
These forest dwelling antelope feed selectively on plants or plant parts such as shoots, roots, leaves, and buds, but their diet is mainly made up of fruits. The yellow-backed duiker is more efficient at digesting poor quality food than most other duiker species. This allows them to eat large, low quality fruits. Their diet makes them very hard to keep in captivity as most domesticated fruits are not well suited to their low fiber requirements. They are considered concentrate selectors, meaning they eat "diets relatively low in fiber, have a well developed ability to forage selectively, a rumen bypass, a rapid passage and high fermentation rate for starch, and they frequently encounter toxins."
Antlion
Antlion larvae eat small arthropods – mainly ants – while the adults of some species eat pollen and nectar, and others are predators of small arthropods. In certain species of Myrmeleontidae, such as "Dendroleon pantherinus", the larva, although resembling that of "Myrmeleon" structurally, makes no pitfall trap, but hides in detritus in a hole in a tree and seizes passing prey. In Japan, "Dendroleon jezoensis" larvae lurk on the surface of rocks for several years while awaiting prey; during this time they often become coated with lichen, and have been recorded at densities of up to 344 per square metre.