Centaurs are a species that live in the world of the Bright series.
Centaurs resemble humans except with elf-like ears and the body of a horse. Centaurs appear to be long lived as Tsukuyomi mentioned being alive for a "very long time".
There are 327,000 centaurs in the US, accounting for 0.1% of the population. The US has the largest population of centaurs in the world. Their birthrate is 1 in every 1,000 individuals.
The top three careers for centaurs are forestry services, ranch work, and backcountry labor. Several centaurs served on the LA police force.