England's Longleat Safari Park has two perky new additions. Patagonian Mara, also known as Patagonian Cavies, are a giant relative of the Guinea Pig and are native to South America. Parents Bernie and Bernice have only been at Longleat for a year and staff are absolutely delighted with the birth of the twins. Maras mate for life, and can deliver between 1 and 3 offspring each year. Mara babies are very well developed, and will start grazing within 24 hours. There is a whole range of gaits for this animal from walking to hopping like a rabbit or bouncing on all fours! Adults can leap to nearly 6 feet despite only reaching about 18 inches in height themselves!