Next time try sticking your character to the ground so it doesn't move around when you animate it, same goes for props and scenery.
Also, your character should look "clearer" or more defined.
Finally, the random looking around by the frog has no point, he/she doesn't look at anything and it just takes away from the character of your frog. When I watch that, I get the feeling that the frog is just a piece of clay, you haven't brought it to life.