Watch the entire program online.
Most wild bullfrogs are escapees from frog farms.
These tiny mussels don't have legs, but they're excellent hitchhikers and your boat might be their next ride.
You won’t need a rod and reel for these fish, but Asian Flying Carp are an ongoing threat, not a good day's catch.
This stuff is toxic to cattle, useless to wildlife, and is taking over ranches.
Watch a preview of the documentary.
Brook trout, a species introduced to Oregon, has forced the native bull trout to near extinction; now scientists are trying to eradicate the brook trout.
