Explanations for the mismatch between mother preference and host suitability can include threat of hyperparasitoids, host defence, and learning of plant-host complex cues.

Molar enamel thickness is a morphological trait that differentiates African apes from hominins, being manifested most dramatically in the megadont hominins (Paranthropus spp.) with hyperthick enamel.

The intercom system worked beautifully, despite the fact that the ear plugs were designed for human rather than kzinti ears.

Kitty's mother had been such a black-clothed incantator, full of rhyming recipes for ills and puddings, for scalds and weather and animal magic.