I actually went to a science/nature camp as a kid where a pig part was we would catch pot guts (ground squirrels)!

Almost every animal there had been caught dozens of times. Because they would go in, get peanut butter, be shown to a counselor that would mark that they were caught, then let go. So pretty sure all of them were trap happy since a 100 traps were out in a field 4 months out of the year, every single year.