Animals are not easy to spot in the Sundarbans. Tigers are essentially invisible, its mostly deer, monkeys, and birds. But at the Karamjal reserve near the north edge of the forest you can watch deer and crocodiles they have collected from poachers, and are getting ready to release back into the forest.
You can feed the deer; boys sell bundles of juicy grass. The crocodiles are kept in concrete pits, protected by wire fence walls and roof. Seems that these things are truly dangerous. We had seen a couple down in the water at the mangroves, but only the menacing back scales.