Get a big German Shepherd! Easy to train to stay out of your garden, but chases off deer, rabbits and racoons. He also is very protective of my chickens which surprised me. I raised them from peeps and he has adopted my concern for them. Such a good doggie.
My guardian is an Old English Bulldog.
Maybe once a week she gets off the couch and chases a squirrel off the back porch, but it’s just the porch. She gets to the bottom step and loses interest.
Though she still expects a biscuit for the effort. :-)