Wolf

The Wolf is the first boss you will face in Don't Look Back. In Don't Look Back: The Sequel, it is seen as a miniboss. In both games, it will jump towards the player. It is invulnerable unless you hit it in the back. Every time you hit it, it's jump pattern changes. It starts at a normal pace, then a faster, higher jump, then a faster, much lower jump that the player must jump over.

Strategy
What you should do is move towards it, and try to go under it's jumps. Then, while it is idle, shoot it in the back. After you've shot it in the back twice, do the same thing only instead of running under it, you'll have to jump over it. It's bossfight does not change in Don't Look Back: The Sequel.

Drops
When defeated in Don't Look Back: The Sequel, it will drop 35 coins, which is not that bad. It is a rather common miniboss in that game, and you can get a lot of coins from it if you're a level 1 spammer.

Trivia

 * In Don't Look Back: The Sequel, it appears 11 times.