Alpacas are generally hardy, healthy animals and are relatively easy to keep. However, it is important to be aware of acceptable ways of looking after this class of animal, including basic knowledge of their nutrition, exercise needs, breeding regimes, normal and abnormal behaviour. Owners need to check their alpacas at least once a day as they usually give little indication that they are unwell until they are very sick and need treated by a vet. Any change of behaviour can be a sign of ill health.They are social herd animals, therefore a single alpaca cannot be kept on its own. Many people start by keeping a small group of gelded males (wethers) or females.