Question: Resizing Pet images for the myadopts and stats etc

[Missy Master]

I'm posting this question here in case others need to see how to do this :)

How would we resize the images shown on the myadopts and stats and market etc pages, for the pet images? Right now mine are all showing at regular size, and that would be fine for the manage section but the lists where there are a lot, each pet really dominates!

I tried this:

$image->resize(150);

in various places but no go, and I don't want to mess anything up! Plus Im not sure how to do it as 150 x 200 or something. Thanks for the help! :)