Some strepsirrhines, such as the galagos, slender lorises, and angwantibos, are primarily insectivorous. The life expectancy of angwantibos is at most 13 years. The lorisids are all slim arboreal animals and comprise the lorises, pottos and angwantibos. Their next closest relatives are the African lorisids, the pottos, false pottos, and angwantibos. The diet of angwantibos consists predominantly of insects (mostly caterpillars), and occasionally fruits. Angwantibos reinforce social bonds through mutual grooming and scent-marking. Calabar angwantibos forage for food alone, but each male's territory overlaps that of several females.