Blizzard has made some important clarifications about the upcoming change to Growl that was mentioned in the 2.4.2 Test Realm Patch Notes: “The hunter pet ability Growl will no longer scale with pet Attack Power.”
The rest of this unfortunately-phrased patch note is apparently: “Growl will now scale with hunter Attack Power as was intended.”
Nethaera posted the following in a thread on the Test Realm forum:
Growl was scaling incorrectly before so it’s been changed to scale with the hunter’s AP starting at around 1200 AP. Other pet abilities such as bite, claw, etc will still scale with pet AP.
This raises a number of interesting questions (such as: “How much scaling? Wait — Bite and Claw scaled?!”). I’ll post more info as it becomes available, but for the moment I’m headed to the PTR to test this viscerally.
 Nethaera posted this, not Hortus. Whoops! [/edit]