You can have your pet do specific phrases with specific redeems with the help of MixItUp. And its not that complex! Lets go step by step.

First in mixitup go to Twitch Channel Points and click on Create New Channel Point Reward and enter a name for it.

Select the reward from the list (will be on Ungrouped by default) and click edit on it.

Now add a Web Request action pointing to the following URL

http://localhost:3800/pog?text=

And add at the end of it your phrase you want your pet to say like so

http://localhost:3800/pog?text=pog online poggers

It will look something like this

After that just click save. Try out your new redeem now on twitch! While vtspog is open it should work no problem~