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.
Now the hamsters' lifespan belonging to each of these types is different from the others. Like, the Syrian hamsters possess a life span of two years at minimum and two and a half years at maximum. The Campbell dwarf hamsters mostly live one and a half year at minimum and two years at maximum. The Winter White dwarf hamsters have a life period of one and a half years at minimum and two years at maximum. The Roborovski dwarf hamsters mostly live for three years at minimum and three and a half years at maximum.