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.
Scientific Name: Mesocricetus auratus. Length: 12.5 - 17.5 cms (4.9 - 6.9 inches) Life Span: 2 - 3 Years. The most well known species of hamster is the Syrian or Golden Hamster and they are the species that are most commonly kept as pets. There are several different colour variations and there are also long-haired varieties. They are known by several different names, depending on their colour, which include; golden hamster, fancy hamster, honey bears, panda bears, black bears, european black bears, polar bears, teddy bears and dalmatian.