By default, they're crepuscular (meaning they're awake at twilight). This is because the wild ones hunt/hunted deer, who are active at that time. Despite this, they also adapt to their society or environment! The more human ones are typically dinural (awake during the day) to adapt to society. However, since they're able to adapt their schedules, they are particularly valued as night guards in modern societies.
They are omnivores, with their diets being about the same as a fox. Their main protein consists of prey animals such as deer or rabbits, however they also eat berries, insects, etc. They can survive on an all-meat diet, but unless they have supplements they can not be fully vegetarian.