So I’m trying to install a pet door and came across this between my studs. This is the second pet door I install and have never seen this. I’m in the dinning room and the wall is obviously an outside wall. Can I just snip it off? Or should I relocate?
In my opinion, that should not be cut. It appears to be a structural part of the house. There will be others like that in the wall, at least 1 more, and if the wall is over 20' it will most likely have an extra one, 3 total. That was code minimum back in the day, and probably still is.
There is a chance that nothing would ever happen bad if it was cut, but that chance, I cannot recommend removing it. Code guidelines are the minimum, never advisable to do something that reduces the effectiveness of a building component that is structural in nature.