This is kind of a mashup of Azortharion's Barbed Shot Helper (https://wago.io/Vy_cmLXaz) and Asakawa's FrenzyTracker (https://wago.io/FrenzyTracker). Credit to Asakawa for the GCD animations and Azortharion for the conditions that cause the helper text to change.
The bar will be green if you will be able to refresh your Frenzy stacks on your pet before the current ones fall off, and red if you can't. It also has some helpful text about when to Cast/Refresh/Wait On Charges to help you get the best uptime on Frenzy you can.
Note: It's a little finicky with Wild Call procs because it seems like WeakAuras doesn't always realize you've gained a Barbed Shot charge when Wild Call procs. I haven't quite figured out why yet but for the time being you'll want to keep an eye on those for yourself.