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I understand that bears and pigs did that to survive but they changed from a herbivorous diet to a omnivorous diet. But how does a animal go from a plant eater to a pure carnviore. The animal I’m talking about is the marsupial lion. I was watching a documentary on it. And they said the marsupial lion ancestor was a plant eating wombat or kola, to fill the ecological predator niche. First off why did it evolve to be a predator when there where plenty of predators on Austurlia! A terror bird, terrestrial crocodile, giant snake, megalaina and thaylcines. Second why in the word is it name the marsipual lion and it dosent look like a lion! A lion has a man. While this animal has bolt cutter teeth. I don’t understand….. If I had saw the fossil remains of a marsipual lion I wouldn’t think it was a lion, . I probably think it was some mutated animal or alien, the last thing on my mind would be that it is a lion, who discovered this animal obvliousily never seen a real lion before . http://www.travelblog.org/Photos/4134171 does that look like a lion?

Hopefully in your animal science class, you learned that every animal has it’s own niche, or job in the animal kingdom. They make discovery channel shows about how hard their niche/life is. Out of all the existing ones, which one do you think has it the hardest. In my opinion, would probably be the ant.
Here’s why:
Everyone trying to kill it(Even other ants).
It has to lift things more than ten times it’s size.
It spends it’s entire life traveling one block.
It’s trying to dig it’s home, but it’s soon destroyed by 5-year old kids.
They have to gather food for the leader ant and not themselves.
We’re about a million times bigger than it.
Now that you know my opinion, what’s yours. Don’t say people’s life is the hardest because our life is easy compared to most animals.

Hi guys
I’m currently working on an essay titled “The Role of Sympatric Speciation in Animal Evolution”
I’ve currently mentioned a few points on habitat differentiation (niche differentiation => temporal isolation => sub-population becoming reproductively isolated => new species)
I’m going to mention polyploidy (however it is insanely more common in plants than animals. Find it difficult to find examples of polyploidy in animals.)
I’m going to mention habitual differentiation (how females will can be very selective of their mates, i.e only go for a certain colour etc.)
Can you guys think of anything else which would fit in nicely? I’m struggling to find examples of sympatric speciation, and I think I’m struggling to find examples of sympatric speciation and not just speciation.
Thanks!
Blue!

I think is an environment but I am not sure. Anyone out there know?

And I quote the essential portions of the assignment paper: ‘…You are to look up characteristics and the history surrounding the animal (extinct) and write a 3-page memorial/obituary. You are to tell the story of the animal’s life. Make the story entertaining, well-written’….’Include all relevant, scientific information you can find, but keep personal commentary to the barest minimum.’
Then it says ‘be sure to include and FULLY EXPLAIN the following in your ESSAY:
1. Scientific name and complete taxonomic classification.
2. Animal characteristics
3. Optimal habitat and geographic distribution
4. Niche relationship to its environment….’
etc.
HOW IN THE WORLD do I incorporate scientific information (Like the Scientific name and taxonomic classification?!! HELLO?!!) into an obituary-style essay?! Please, please help me. I can’t ask my teacher because he is gone until the due date. Does anyone have any ideas?