That's great that you are planning a trip with your four-legged friend, Phil!
I would add that
B&B Ireland lets you filter by "Pet Friendly", if you are concerned about dog friendly accommodation.
For hiking trails in the south west, the
Sport Ireland website often states whether dogs are allowed or not on the trail. That should help you plan ahead of time.
Let us know the trails you end up choosing in County Kerry 😊
Cheers,
Antoine