I found two issues regarding RR fire breath

1. If a fire_breath entity has hit a block, it cannot hurt entities anymore. Imo all fire_breath entities should be damaging no matter what since it's weird to just phase through the fire unharmed
2. When you die by RR fire_breath, the death message is just "death.attack.fireBreath"

That second one certainly sounds appropriate for Wolf.

fixed in 1.2.5