Teddybear hamster is actually a variation of Syrian hamster which belongs to the golden hamster group species. They are also being called as fancy hamsters and longhair hamster due to their special long soft hair which remarkably resemblance to toy teddy bears. So if you do not want a really hairy hamster, a teddybear might not be the best hamster for you. Sometimes they are also known as "angora hamsters" which refers an ancient breed of goats with exceptional long hair originally from the province of Angora, Turkey.
Teddy bear hamsters have an average life span of 2 to 3 years if they receive proper care from their owner. Their average body size is roughly up to 4 to 5 inches long for adult. As a Syrian hamster, they prefer to live in solitary, so you will need to house adult teddybear hamsters separately.
Some resources indicate that the teddy bear hamster seems to have more at risk on developing wet tail sickness compared to other species such as dwarf hamsters. So you will need to give extra care and attention to them especially for any factors that could affect their emotions.
Although most hamsters can groom themselves, you can also help them combing their hair by using special hamster combs that could be bought at pet stores. Even toothbrushes will work well. These tasks will also lead up to a healthy way in maintaining good relationship between you and your hamster.