2. The little lion and tiger rowed from bank A to bank B..

3. The little lion goes from B to A, and then the little leopard paddles from A to B (poor little lion).

The little lion rowed from B to A again, and then handed the boat to the big tiger and the big leopard to get them from A to B.

5. Big Tiger, after the big leopard arrives at the B bank, leave one (let the big leopard stay, and the big tiger will try again). The big tiger rowed from bank B to bank A with his son and little tiger.

6. The big tiger left the little tiger on the bank of A and took the big lion from A to B.

7. Let the little leopard on the B shore row the boat from B to A, bring the little tiger and lion on the A shore to the B shore twice, and all six animals arrive at the B shore.