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.
Average Lifespan. The average lifespan of a dwarf hamster is one to two years. However, each species and individual hamster is unique. Growing up to 2 to 3 inches and tipping the scales at up to 2 ounces, dwarf hamsters come in three different species: Russian, Chinese and Roborovski.