1)Hippos can knock back the lion the equivalent of the hippos forward movement.The Hippo must end its turn on the lions space to knock it back. This rules takes care of the one/two space that the Hippo can move, but was insignificant for the hippo to ever move one space.
2)Maximum movement for a gazzelle is seven instead of nine. This rule will still allow the gazzelle to win with three card movements where the total will be 21 if the maximum is used. At the same time it will make you move the gazzelle more strategically and you may want to stay behind the lions until you can make a final leap to the finish..