What has four legs, is holy, and is dodged by traffic at all costs?

My tea lady keeps asking me to tell her the composition of a cow. I was utterly confused until I finally asked her to tell me the composition of a cow and she said, “A cow is a domestic animal. It has four legs. It gives milk, curds, cheese.” I realized she must have been trying to do her daughter’s English homework. We then proceeded to have a fight over whether cows give ice cream.