If your guinea pig hasn't learned basketball and some of the tricks listed under the Starting Tricks tab, it's a good idea to work on some of those first before starting on fetch. Guinea pigs that have already learned to play basketball (either with a higher net or just placing the ball in a bowl) will have a huge head start on the fetch trick and should be able to skip a few steps in this tutorial.
Once your guinea pig gets good at this trick, you also have the option to keep increasing the distance they can fetch from (two of my piggies learned to fetch from 12+ feet away!) or even teach them to jump over some (very low!) jumps or run through tunnels while carrying a ball. There is really so much you can do to add more challenges and make this trick more interesting.
To read the step by step tutorial for teaching a guinea pig to fetch, check out the How to Teach a Guinea Pig to Fetch page or view the video tutorial above.
Thanks for reading & happy training!