Odin is 2, already.
Judging by his reaction to the cat adoption cage at his vet’s office, I really don’t think he’s particularly overfond of them....;D
[it’s a pity, really...he could’ve easily carried them in his “saddlebag” harness]
RUFF! RUFF! MEEEEEEEEEEEOW!
You can introduce them with an older dog, but while you can train the dog to not eat the cat, you will likely be unsuccessful at teaching the cats to not assault the dog (demonstrating yet again which of the species is more intelligent. ;-) ).
I’m thinking Odin wouldn’t appreciate an impertinent kitten pouncing on his back/boxing at his ears, etc. ;-)