1 Think of this as being like the skin of the avocado. Although not strictly a part of the adrenal glands themselves, the primary function of this layer is to enclose and protect each of the adrenals.  The Cortex. You might compare this layer to the flesh of an avocado.
The average lifespan for a hammy is about 2-3 years and they are very sweet!! The average life span for a hamster in general is about 2-4 years, but different breeds live differents spans. Teddy bears: 2-3 yrs. Syrian: 1 1/2- 3 yrs. Cambells, russians & other dwarfs: 1-3 yrs.
The average life span for the Siberian dwarf hamster variety is between 1.5 years and two years. Roborovski Dwarf Hamster. The average life span for the Roborovski or Robo dwarf hamster is between three years and 3.5 years. The Roborovski hamster is the smallest of the dwarf hamster varieties. These dwarf hamsters are known for having the longest lifespan out of all varieties of dwarf hamsters. Stellajune3700/iStock/Getty Images.