If you want a protective dog, get a very smart dog because protective and dumb is not a good combination.
Rotties are great dogs, but may not be able to keep up on long bike rides.
Blue Heelers are smart and tough and loyal and protective, but are a little small to protect against much.
German shepards are great, but the breed has weak hips.
I have a german shepard blue heeler mix that would probably fight a bear for me, even though he's 13 half blind and doesn't have much teeth left, and is a sweetheart, but I'm sure he'd give it a try if he thought it was his job.


He's about 60 lbs, not huge, but very strong and very loyal, and up until
about a year ago or so, he could keep up on mountain bike rides just fine.
He's been the best dog I've ever known, and one of the smartest for sure.
If you want a cool mountain buddy that you can take places with you and will tear it up and have fun, by all means get one of these breeds. If you really want a dog for protection, just get something that will bark when it sees a stranger, and get a gun to take out after the dog barks. That will be much more effective than relying on the dog to fight off intruders, and if you don't want a gun chances are you don't need a dog for protection either.
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"We don't need predator control, we need whiner control. Anyone who complains that "the gummint oughta do sumpin" about the wolves and coyotes should be darted, caged, and released in a more suitable habitat for them, like the middle of Manhattan." - Spats
"I'm constantly doing things I can't do. Thats how I get to do them." - Pablo Picasso
Cisco and his wife are fragile idiots who breed morons.
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