How can I teach my puppy how to ring a bell to signal when they need to go outside?

To teach your puppy to ring a bell to signal when they need to go outside, follow these steps:

1. Hang a bell by the door at your puppy's nose level.
2. Every time you take your puppy outside, encourage them to touch or ring the bell with their nose or paw.
3. Praise and reward your puppy with a treat or praise every time they ring the bell.
4. Be consistent and patient with the training process, and your puppy will learn to associate ringing the bell with going outside to potty.