Despicable - the aliens have recruited a local wolf to protect their secrets!
It's safe to assume that this wolf is hungry. Look for something you can feed him with.
There's weirdly no restaurants on this side of town, so you'll have to see if anyone's got snacks in their homes.
Try checking streets that characters live on.
The principal's house being locked is a bit suspicious - he's probably hiding some fantastic snacks.
See if you can find his hidden key.
Look under the doormat to find a hidden key, then use it on the window door to the right.
It's not exactly fine dining, but the principal's fish would probably be a nice treat for the wolf.
Vincent can't catch the slippery creature with his bare hands though, so we'll need to find something to trap it in first.
While their track record isn't great, New Frontier Corp definitely seem to enjoy trapping things - check out the locations around their facility.
More specifically, see if they've thrown away anything useful.
Visit the New Frontier Corp building, and 'grab' the trash container on the far left to get a fryer basket - exactly what we need to trap the fish.
You can now use the fish on the wolf to distract him.
As expected, a glowing radioactive rod - exactly what we need to conquer the sewers.