The best season is February to May, when you'll be able to see plenty of beautiful cheetal (spotted deer), blackbuck, sloth bear, gaur or bison (largest of the wild cattle), wild boar, Kanha's unique barasingha ( 12-pointer ) swamp deer, and also monkeys galore.

Does it follow that "May through September is the best time to visit, and if you come before May, you probably won't see much."?
no