  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.
Sunday 2 October 2016 09.45 EDT Last modified on Sunday 2 October 2016 19.55 EDT. The loquacious African grey parrot, one of the most illegally trafficked birds in the world, has been talking itself towards extinction for years thanks to its reputation as a gregarious and long-living pet. On Sunday it was given extra protection after a global wildlife summit agreed a ban on the international trade.