Deer hate dogs.
Considering my neighborhood is awash with dogs - every contiguous neighbor has at least one, and next door west has 7 schnausers - vile little things - Deer don’t seem to be overly bothered by dogs. On the bright side I have coyotes running around my property a couple of times a week, and they’ll kill and eat the younger animals.
We have a dog.
Also, in the summer in the garden we have motion activated lights, flashing red predator eye LEDs, holographic scare tape, coyote urine granules, rotten egg spray, peppermint spray and cayenne pepper powder (Purchased in bulk from Amazon or Costco. Based on the comments just about everyone seems to use it in their gardens, not for cooking.) We live in a part of town sandwiched between two major highways and Darwin used to take care of things. Unfortunately, it looks like the deer have gotten smarter, or natural selection has selected for ones who now avoid the highways. The houses are too close together to allow shooting the deer with anything but a Super Soaker (and that's probably illegal, too, I just haven't looked it up.) Havahart needs to make deer-size traps.
“Deer hate dogs.”
LOL! Not my wife’s pit mix! I think the local deer herd made her an honorary doe. She likes to just go out back and watch the deer feed in her yard. She watches, the deer eat. They’ll walk up to within 10 - 12 yards of a rather large dog.
My dogs (Kangals) kill and eat the deer.