individuals, of any breed, can be cantankerous... but as a whole they're all lovable and good natured, if treated with love and respect.
Here's my list of some breeds and my personal awards:
Most Intelligent (book smart) - German Shepards. It's spooky how smart they are.
Most Intelligent (easy to train) - Vizsla... I taught my Vizsla, (Lucca), to sit, roll over, and fetch on command when he was 10 weeks old and did it all in less than an hour.
Most Affable - Labradors. Probably, IMHO of course, best all around dog. They do it all, and do it gladly.
Most mischievous - tie between Beagles and Bassett Hounds.
Most Hilarious (to watch, they're in another world) - Bloodhounds.
Most maligned - Doberman's and Rottweilers... sure, they can be trained to be vicious... but their natural state of mind is quite docile, if energetic.
Most Energetic - again, Vizsla's. You have to see it to believe it. ALL of them.
Best House Dog - Golden Labs. They make YOU clean house, love watching TV and listening to music... only fault is no matter how big they get they consider themselves a lap dog.
Most Couldn't Care Less About You Other Than Giving Them Food - Akita's... and I think Siberian Huskies... oh they both like you, even love you... but they don't see you on their level, much less their master.
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