  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.
Experts brand new bird flu strain one of the 'most lethal viruses ever' as it spreads from China to Taiwan. Scientists have described the new bird flu that has killed 22 people in China as one of the most deadly influenza strains as it spreads to Taiwan. The H7N9 flu has infected 108 people in China since it was first detected in March, according to the Geneva-based WHO.