This is one of the crazier behind the scenes bits. The network and the studio are putting the screws to Star Trek and things are starting to come apart.
Nick at Nite is actually still a thing, but it's "nick@nite" now which tracks. Lost in Space ran from 1965 to 1968, a three-year run comparable to that of Star Trek. Strange, right?
The Russian space dog I was thinking about was Laika. They sent her into space prior to sending humans. Nick Abadzis wrote a comic about her in 2007 called Laika and it's pretty good and by good I mean it's about a dog that has no idea she's going to be sent into space and...then return to your uncle's farm upstate and live happily forever.
17 to 01 is available on iTunes. It updates Friday nights at 8:30 PM ET / 7:30 CT. We're also amazingly on Stitcher.
EDIT: The audio for this should be fixed now.