Clothes to last an entire lifetime, bug spray, water, etc. The rainforest supplies you with wood, fruit, and nuts. You may not want to eat meat from the rainforest because the animals are monkeys, tigers, etc.
Bengal tigers have no predators, since they are an apex predator themselves. However dead tigers will be feasted on by flies, maggots, beetles, and scavengers like vultures. people eat animals so I presume that people might eat Bengal tigers
Lions live in Africa*. Bengal tigers live in Bengal- India. They do no eat each other because they live in different places. *Note: Lions do occur in India (Asiatic lion) but the range does not overlap that of the tiger so they do not meet in nature.
Bengal tigers eat their prey quickly and eat it to the bone so no other animal can take it from them and so then no other animal can also eat it as well. These tigers are wonderful animals and like to eat their prey regularly so they wont go hungry and die.