Thinking about group dog training classes? You might want to rethink that. Here are 3 reasons to skip them, at least early on: 1. Split focus. If the trainer’s juggling 5–10 dogs, your dog’s not getting the attention it needs — and bad reps build bad habits fast. 2. Total chaos. Would you teach your kid math at a birthday party? Then why try to train your dog around a bunch of out-of-control dogs? 3. One bad dog changes everything. There’s always that one. If it’s reactive, humping, or aggressiv