The Lhasa Apso is a small breed of dog. It originated in Lhasa, Tibet, which it is named after. Male Lhasas generally weigh about 14 to 18 pounds, and female Lhasas weigh 12 to 14 pounds. Lhasas have developed a thick coat of fur because they were bred in Tibet, which can get very cold. Their coat comes in many different colors, and they usually have dark brown eyes and a black nose. Lhasas generally live long lives, some surviving into their twenties. Lhasa Apsos do tend to develop arthritis in their legs, which is due to the fact they are excitable, energetic dogs. As they grow older they may weaken in their legs.