Pure CBD. You don’t get the entourage effect with CBD isolate. CBD isolate is the cheapest cannabinoid and is mostly used in CHEAP CBD oils.
We also don’t recommend giving your dog Isolates. An isolate is basically pure CBD as a single compound. The endocannabinoid system works best when multiple cannabinoids, terpenes and flavonoids are present. You can’t get the entourage effect with CBD isolate. This is why it is important to make sure there are other cannabinoids present.