According to wiki in Summoning Technique it is written that:
It should be noted that anyone can summon a contracted animal as long as they have the blood of someone who has made a contract, the seal of the summoned creature and a source of sufficient chakra that the summon will accept
Means anyone can summon a contracted animal by having blood of someone who has made a contract. So my question is:
Is there any event mentioned in anime or manga which shows this type summoning ?