M
Mr. Crane
Guest
Perhaps, shortly after the events in the Star Trek: Enterprise series, Archer and Porthos were accidently pulled through a time rift of some kind (is Daniels still around), and ended up in the mid-23rd century? This would explain why Archer and his beagle are still around - I don't buy that he would be like 150 years old!
... or maybe only Porthos came through a time portal, and became a sort of mascot at the academy.
After all, Scotty never says that it was actually "Admiral Archer" that marooned him in this duty on the Vega ice planet... maybe another admiral took offense to the loss of the canine ...