Summoning Technique

Kuchiyose (Wiktionary:口寄せ, 口寄せ) refers to the practice of allowing spirits to possess one's body and speak through it.

A technique formulae (術式, jutsushiki) is produced at the hand's location when a summoning is performed. Like with seals, these formulae are a random assortment of Kanji, Hindi script, and other symbols.

Animals can summon those who have signed contracts with them using the Reverse Summoning Technique.

Kurama can apparently identify who is trying to summon it, something other summons have not been able to do. Similarly, any person who has summoned Kurama must continually provide their own chakra in order to keep it under their control.

In the anime, Shiromari is summoned for a fifty year period because of a scroll left by its summoner before they died. When the scroll was destroyed, Shiromari was finally able to return home.

In the Naruto: Shippūden anime, attempting to summon an animal without first signing a contract teleports the user to the home of the animal they have a natural affinity for. In the Boruto anime, attempting to do this simply results in failure.

In the anime, when the Animal Path performed the Summoning Technique onto Ibiki Morino's abdomen, it caused him tremendous pain as the Giant Drill-Beaked Bird burst forth from his backside.

In the anime, Summoning animals were in high demand for shinobi that researchers on the Summoning Island committed to research to enhance these animals, before creating the Ultimate Summoning Beast that turned on them all.