Be Loyal is to be faithful to one's friends , principles , country , school , job , etc. is a tenet that everybody have , animals have it too . Gorillas are a clear example of it . In Africa these great apes live in group . As many as thirty gorillas may live together, but there are more likely to be from six to seventeen animals in a group . The group always include at least one full-grown male that by this time has grown a saddle silver hair on his back . Whithin the group there are often one or more younger black back males , a few females ....