I checked all pet regarding abilities of SCH and SMN. I think it has already been reported somewhere, but summarizing here may be a good idea.

Here are the abilities which update pet stats:
Spur
Fey Light
Fey Glow
Fey Covenant

* Update occurs not only at the application but also at the disappearance of the buffs
* Removing master's buffs by right-click has no effect, which confirms only buffs on the pet are involved

Rouse and Fey Illumination do not update pet stats. It is because these ailities change percent modifiers but not change pet status directly like the other abilities.