Alexander so esteemed his painter that he presented Campaspe to Apelles as a reward for the portrait. The tale of Alexander and Apelles, a favorite of Renaissance and Baroque painters, celebrates the power and nobility of painting. Giovanni Battista Tiepolo painted this episode at least three times.
However even 18 hours is not considered abnormal for a Chihuahua. This includes naps.There are 2 types of sleeping. One is a lighter sleep (called slow wave) and the other is the deeper sleep (known as REM-Rapid Eye Movement). Dogs, just like humans do have these 2 different types of sleep.
It depends on healthy you keep them. The average life expectancy of chihuahuas is 15 to 18 years. Unless they get genital herpes, which can shave off approximately two to three years. Be careful. The smaller the animals, the faster their heart beat, the faster the body oxidizes, the shorter their life span.