At the beginning of the game, in the clubhouse area, there are some chickens running around. If you shoot one a few times, it will grow to super-size and attack you.
The first Scooby-Doo video game in which Shaggy and Scooby aren't voiced by Scott Innes. Here, they are voiced by their current voice actors, Matthew Lillard and Frank Welker, respectively.
Sometimes when you defeat the Snowmean enemy, you will be able to pick up it's head and throw it.