Was Travis horse name on the vaginian same gunsmoke and bonanza?

It's very likely you're thinking of the popular TV Western series "Gunsmoke" and "Bonanza", which both featured horses named "Buttermilk". However, there was never a character named "Travis" on either show.

Here's a breakdown:

* Gunsmoke: The main character, Matt Dillon, rode a horse named "Buttermilk."

* Bonanza: The Cartwright family patriarch, Ben Cartwright, rode a horse named "Buttermilk."

It's easy to confuse the two, especially since they were both popular shows airing around the same time. If you're thinking of a different Western series, please let me know!