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.
Hamsters have been known to live upto 4 years in the wild. But their average life-span varies as per the breed. The average lifespan of dwarf hamsters, such as the Chinese, Siberian and Roborovski hamsters, is about one to two years, but some may live as long as three years. The average lifespan for a Teddy bear/Syrian hamster is two to three years. It is possible, but rare, for these animals to live as long as five years.