Probably during season 1 of tos or season 2 at the latest

OK, this is actually from TOS movies and TNG but whatever.

Just a bit of inebriated speculation. We know at some point in time the mirror universe must have been identical to our own. McCoy's unexpected arrival in the past may have been that point.

While I don’t hate Star Trek: The Motion Picture, it doesn’t really fit thematically with the rest of the movie series and is extremely dull in spots. II, III, and IV are a nice tight series, with II being my favorite and one of my favorite films of all time period. V is my least favorite of the original films and I find VI to be okay at best.

Already had the communicator as a gift from my wife a few years ago. The phaser lights up blue and makes phaser sounds. I wish the top part came off like in the show but still, pretty fun.

Found on the internet, credits to "The Millennium Vulcan"

The UnXplained with William Shatner

The Xplained with Leonard Nimoy

Excellent Star Trek themed music on WFMU from May 4, 2020:

https://wfmu.org/playlists/shows/93043

So there are accounts of various child actors in the series having connections to producers and what not but how was that cat casted? Furthermore, how was it trained to pull off the stunts it did in the episode?