while the topic is on summoning. Would Pain be capable of summoning 'beings' that he didnt sign contracts with, he already have chameleon, scorpions, rhinos, 2head dogs, centipedes.

1- can he summon frogs?
2- can he summon the legendary 3rd's monkey Enma(btw is the most kickass summon that existed)
3- just for the sake of Konohamaru - did the 3rd get Konohamaru to sign a contract with the monkey clan?