Yes, if the cave bear attacked the woolly mammoth on the side or back.
Only if it attacked from the back of the woolly rhino.
Yes, but it is more likely that the cobra's poison would injure the woolly mammoth than killing it.
No. Australopithecus was a herbivore, and died out before the first Mammoth.
Hunted and trapped with flint and spears.
Yes. A woolly mammoth is very capable of killing a t-rex by ramming into it or hitting it with its tusks, but these two creatures never meet.
humans we were the only ones smart enough to kill them
Adult woolly mammoths were so large that they had few predators. Predators of adult woolly mammoths would have been prehistoric humans and Neanderthals, and possibly Eurasian cave lions and Homotherium (a type of saber-toothed cat). Juveniles and calves would definitely have been hunted by all of the above predators as well as by cave hyenas, which would not have been able to kill an adult mammoth.
Adult woolly mammoths were too large to be threatened by the predators of the time lke cave lions, cave bears and dire wolves, but any one of these could kill a juvenile mammoth. The adults only hunter would be neantherdal or near modern man, who would set up elaborate cliff side traps for them.
It could if it wounded it by clawed it down and stabbing its fangs into it, but the woolly bison would charge to defend just like a woolly mammoth or a woolly rhino. 3 or a pack of saber-tooth tigers will easily defeat a woolly bison.
Only if he has a long and sharp enough spear with him.
Stone age hunters used a variety of methods to kill the Woolly Mammoth. The weapons they used depended on which method they chose to use. One method used by Mammoth hunters was the pit trap. The hunters dug a deep hole in the earth, and chased the mammoth past the pit hoping one would fall in. If one did fall in, then it probably died from the fall. Another method chosen by the hunters was to chase the herd of mammoth over a cliff. Again, the mammoth probably died from the fall. Another method used by the hunters was to circle around the mammoth and goad it into charging one of the hunters. When the mammoth charged the hunter, the other hunters would throw spears at the mammoth or try to cut the hamstrings on the mammoth's legs. If they were successful at cutting the tendons in it's legs, then they could get close and stab the mammoth with spears.
Adult woolly mammoths were too large to be threatened by the predators of the time lke cave lions, cave bears and dire wolves, but any one of these could kill a juvenile mammoth. The adults only hunter would be neantherdal or near modern man, who would set up elaborate cliff side traps for them.