Training your dog to signal when they need to go out is a great way to prevent accidents in the house. One effective method is to teach your dog to ring a bell when they need to go outside. Here's how you can do it:
1. Hang a bell by the door at your dog's nose level.
2. Every time you take your dog out, say a command like 'outside' or 'potty time' and ring the bell.
3. Encourage your dog to touch the bell with their nose or paw by using treats or praise.
4. Repeat this process consistently every time you take your dog out.
5. Eventually, your dog will associate ringing the bell with going outside to potty.
Remember to be patient and consistent with the training. It may take some time for your dog to learn the signal, but with practice, they will catch on.

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Topics covered in this question:

Dog Behavior House Training Dog Training Potty Training