Tamed Pet Summoning Levels
This page tabulates the level of the Summoning skill required to summon Tamed Pets.
Some Tamed Pets, once tamed, may be summoned without any summoning skill whatsoever: these are tabulated at summoning level 0. Most Tamed Pets have summoning levels of 9 or higher.
This table does not include Non-Combat Pets, (such as Ducks): once tamed, they may be summoned without any summoning skill whatsoever.
This table does not include Summoned Pets, which have completely different summoning requirements.
A more complete list is currently available here.