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.
Sometimes referred to as mat dogs because they sleep so much, they may need 18 hours a day of sleep. While most dogs get by on around 14 hours a day, puppies are busy growing and taking in information, so they'll require 18 to 20 hours of sleep a day to recharge.