Just after Tonane tells SG1 they can't defeat the Aliens/Spirits, there is a scene with the "wolf" vanishing some base personnel. At the end of this scene a hand can be seen (at the far left, near top) beckoning the animal to turn away from camera.
The Salish Tribe are indigenous to the Pacific Northwest and western Canada, oddly enough, the same region where the show is filmed.
Before the arrow came through the gate and hit Jack, they received SG-11's iris code, but the Stargate had not yet opened.
The Salish seem to use the same weapons as the inhabitants of Cartago (P3X-1279) in "Cor-Ai": basically a mixture of a crossbow and a slingshot, which looks a bit odd in the hands of a Native American based culture.
Teal'c: I am certain I heard something.
Teal'c: Jaffa do not believe in such things.
Hammond: Obviously we've started our relations on the wrong foot.
Jack: But... that's so rare, sir.
Jack: Aliens are always poking me full of holes.
Tonane: (talking to a wolf) Tokaya, my friend! My... your coat shines beautifully today. (whispers) A little flattery couldn't hurt, Sam.
Sam: My what... big eyes you have!
Jack: How do I know you're really Daniel?
Jack: Yeah, okay.
This is the first of many appearance of Alex Zahara. He has played eight character in total: Xe'ls in this episode, Michael in "1969", the Daniel mimic aliens and their leader in "Foothold", the shy Unas in "Beasts of Burden", Eggar in "Metamorphosis", Iron Shirt in "Enemy Mine" and Warrick in "Space Race"
Syndication air date: November 22, 1999.
Sam: My what big eyes you have.
A reference to the children's story Little Red Riding Hood - maybe Sam does not quite trust the wolf?