Amanda Grayson wrote about Spock’s disappearance in her journal entry for December 7, 2237, noting that I-Chaya had gone with him. She was panicked, annoyed that Sarek was working and seemed unconcerned, but reassured that at least the fat sehlat would keep her son warm in the cold desert night. (TOS novel: Sarek)Sarek and Spock visited the grounds in 2268, Sarek said he knew that the memorial had been Spock's idea. (TOS - Year Four comic: "The Enterprise Experiment, Part 5")
In 2286, while reconditioning his mind on Vulcan after fal-tor-pan, Spock wandered into the mountains and encountered a sehlat which he initially thought was I-Chaya. After controlling his emotions and remembering I-Chaya had died when he was seven, he and the sehlat repelled an attack of five le-matyas. (TOS comic: "The Needs of the One")
Leonard McCoy knew what I-Chaya’s fur felt like in the Vulcan sun, and the feeling of I-Chaya’s tongue tickling his thumb, memories left over from Spock’s katra. (TOS - Strange New Worlds VII short story: "All Fall Down")
In 2293, while meditating in his apartment in San Francisco following the death of James T. Kirk, Spock focused on the scene of I-Chaya saving his life in an attempt to center his mind. (TOS - Crucible novel: The Fire and the Rose)
- TOS episode: "Journey to Babel"
- TOS audiobook: Passage to Moauv
- TOS - Year Four comic: "The Enterprise Experiment, Part 5"
- TOS novel: Vulcan's Glory
- TOS novel: Demons
- TOS novel: Sarek
- TOS novel: Vulcan's Forge
- TOS novel: Assignment: Eternity
- TOS - Strange New Worlds VII short story: "All Fall Down"
- TOS - Crucible novel: Provenance of Shadows
- TOS - Crucible novel: The Fire and the Rose
- TOS comic: "The Needs of the One"
- TNG novelization: Unification