An average 40 - pound adult dog needs just under 1000 calories total per day. (doghealth.com)
A healthy, active 8 - pound adult cat requires about 30 calories per pound a day, which calculates to about 240 calories a day. (petsinthecitymagazine.com)
A common portion is 1/4 to 1/2 cup daily for a 5 to 7 pound adult rabbit. (indianahrs.org)