Like most Americans, San Antonians love to bitch about their neighbors on Nextdoor — the social media app where folks can say nasty stuff about their local homeowners association or snitch on that annoying guy down the street. Even so, the issue Alamo City residents complain about the most via the app isn’t their neighbors — at least not the human type — according to a recent study by home construction company Regional Foundation Repair.  Instead, it’s pooches.