of the many breeds of the domesticated europan rabbit (Oryctolagusbcuniculus), the albino New Zealand White is the most common breed utilized in biomedical research. the visibility of the peripheral vasculature in albino rabbits is advantageous to the biomedical use of this rabbit. Non-albino breeds such as black and white Dutch belted rabbit tend to be preferred where pigmentation is required (i.e.ophthalmological research).
Rabbits like rodents have two large upper incisors and two large lower incisors. Unlike rodents,however, an additional pair of incisors (peg teeth).
This additional pair of upper incisors is greatly reduced in size and is why rabbits are members of the order Lagomorpha rather than the order Rodentia.