  Collagen is the main protein of connective tissue in animals and the most abundant protein in mammals,[1] making up about 25% to 35% of the whole-body protein content.I â¦ t is naturally found exclusively in metazoa, including sponges. [2] In muscle tissue it serves as a major component of endomysium. Collagen is the main protein of connective tissue in animals and the most abundant protein in mammals,[1] making up about 25% to 35% of the whole-body protein content.
The Southern Cassowary - The Most Dangerous Bird on Earth. Sunday, 1 September 2013. Ask a ten year old what the largest bird in the world is and the chances are you will get the right answer â the ostrich. Asked about the second largest and the odds are still very good that they will be able to name the Emu.
The cassowary, the dinosaur bird of the Australian rainforests, looks like a massive prehistoric turkey walking on stilts with a huge helmet on its head.The Guinness Book of Records lists it as the world's most dangerous bird.hile the cute and cuddly Kola gets the all attention, the oddball cassowary, which is actually far more endangered than the koala, gets little funding and attention. With only 1,500 still left in the wild, this endangered rainforest bird faces certain extinction. It may not be long before it goes the way of the dodo.