anti-freeze coolant liquid, either your reservoir opened up, their a leak in your lines, or worst case scenario, you busted your radiator wen it tipped over which takes a hefty chunk from your wallet to replace. find the problem and fix it as soon as possible and dont run your sled incase theres a leak and it overheats. if you cant find where the leaks coming from just pour water in the coolant reservoir until u find where its dripping from.
Most likely anti-freeze fluid. Do not get it on your face or in your mouth and if your worried your animals may have consumed some (it smells and tastes good to them) take them to the vet immediately.
Best guess would be that it is Anti-freeze. But I have no way to be certain. I don't know much about snowmobile, but i believe that when my car's head gaskets blew that antifreeze leaked out and that it was green.
The light green liquid is engine coolant. You may not have a leak, when the snowmobile tipped over coolant may have come out of the coolant overflow reservoir. The reservoir have a small hole at the top, to allow air in.