I need more help how do I use Herolab to own a technocritter as a pet?
You'll need the Howling Shadows data set to get a complete critter listing, but you should have the core critters with the base set.
Here's how you create a pet:
Open a new profile, go to the Type area, and select Critter/Spirit. This selection will allow you to start up a portfolio for a separate critter. On the Basic tab, you'll select the Heritage of the Critter you're making for a pet. In my example, the Critter Heritage is Dog. If you are adding augments to create a technocritter, you jump on over to the Augments tab, where you can add cyber, bio, and geneware. There's also an Armor tab, and others that can help in creating a useful technocritter.
Once you're done creating and saving your technocritter, if you want to add its portfolio to the portfolio of your character, all you have to do is load up your character first, and go to "Portfolio" in the top menu and select Import Hero from Portfolio, and it will allow you to add your technocritter in as part of your character!