In the past, many scientists believed that only mammals and birds could feel or think in complex ways. Reptiles, fish, and insects were seen as simple creatures that reacted purely on instinct. But ...

The more we study sentience among nonhuman animals (animals) the more species are added to the sentience arena—the biodiversity of sentience is forever growing—and ethical questions about pain and ...

Crawling along the underbrush of the tropical savannas of Brazil, there’s a powerful and mysterious insect known as the velvet ant. Actually a kind of wasp, wingless females of this species ...

Large animals tend to take longer to grow and reach maturity, so they reproduce more slowly. While mice have a short generation time (how long it takes a newborn to grow up and give birth) of about 12 ...