Dogs are considered man's best friend because humans have kept them as pets for a long time, even as family members. In Maya culture, dogs were seen as divine beings and placed in graves to guide people to heaven. While small dogs are sometimes seen as toys, they need love and play just like all dogs. Big dogs also need love and play, not just for security, and can work as police dogs or assist blind people. Many street dogs were once pets but were abandoned or became lost. Dogs are described as loyal and pretty.