Junster is correct but there are still a good number of fendered bikes out there. The trick is to fabricate new mounts and brackets that can withstand the abuse of motor vibrations and shock at speeds bikes weren't meant to endure. Many, (most) of the department store bikes will have weak fender bracing and you need to be aware of that. As for the Jaguar, fenders from a Schwinn Point Beach will bolt right on as will those from several other Schwinn models. Just keep a close watch on the brackets and fasteners and don't neglect cracks or loose rivets.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"