No you’re right. It was an alien (in the Cascade Mountains) that killed the guy’s dog and he “killed” the alien and put it in his freezer. But then the alien wasn’t killed, just knocked out. IIRC the story ends with a bunch of black suv’s loading the alien and the freezer up and whisking it away.
I seem to recall seeing that monster in the ice thing too. I grew up in Minnesota in the 70’s. Later on I recall seeing the remains of a baby mammoth from Siberia on display - and advertised as such.
I remember now! The alien was in the freezer - the bigfoot was shot and buried by a man who was afraid he might be accused of murder and wouldn’t identify himself or his location.
The shot-and-buried story was a little more believable ;-)