Archer vs the world

Archer's a two year old rescue from Toronto. We've had him for 4.5 months and we're working daily on positive reinforcement training. Any tips, blogs, training methods to battle his fear of people, dogs, bikes and the world is welcomed. Thanks, Internet!

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Archer gets aggressive with almost every dog we encounter on the sidewalk. Here he's barking at a much larger dog.

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Here’s Archer showing a lot of aggression with a french bulldog on the sidewalk.

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How can Archer not hate bikes anymore?