What is the reason for camels bringing food back up and projecting it out?

Are camels nice to humans? Why do nomads use camels? Is sugar cane a safe bedding for your guinea pig? When did the beaver become New York's state animal? What colors do Corgis come in? What does kangaroo's enemies do? Is dogs a singular noun? Are bighorn sheep diurnal? How big do Keeshond puppies grow? What prevents a horse from vomiting? Why would the suply curve of a dog-walking business by considered elastic? What is the external part of the ear called? What are some cattle brands in Texas? Is a short hair guinea pig better than a long hair guinea pig? How much does a Deere Tractor technician make? How much do english springer spaniel cost? Are nasal packs always used for a nose job? How many days r going to be there in february in the year 2066? Can a dog shivering post surgery be a sign of infection? Can you buy an echidna?