What action, if any, to tag along?

[Nohwear]

If I have a combat pet, such as a Drake Companion, who is small enough to share my space, what action must the pet take to tag along, if any? Is there some way that I can move my pet with me so that it uses my move action and speed? Do I need a free hand, or is there a way for it effectively ride me? This is for PFS if it matters. Thank you in advance.

[Saldiven]

If the pet is that small, in theory it could ride you like a mount. That would be the only way I can think of that the two of you would activate and execute actions at the same time.

I don't believe the rules are completely explicit on this, though.

[Rub-Eta]

As long as it's small enough to sit on you or you carry it in a Familiar Satchel, it's no problem what so ever.