What are some breeds of dogs that absolutely require a fence?

I work for Wasp Security. We install electric fence in Thailand. I am also a dog lover.

If the cost is not prohibitive you could add electric fence predator proofing to your proposed perimeter. If it will keep coyotes out it should keep dogs in.

From a dog perspective the dumber dogs are the closer they stay. This is like the question about "why my dog chews up the house" The more intelligent the dog the more inquisitive/bored they get.

Female dogs will stay closer to home than males.

So look at dogs like English Bulldogs not the sharpest tools in the shed. Somewhere their must be a rating of intelligent dogs, go to the bottom of the list.

Why not build a cheap wooden fence around the house (unfinished lumber) or a portion of the house and let the dog have the run of that and only take him/her for a walk outside occasionally. My Black Lab seemed to happy in his 20 x 10m backyard. Although he would go walkabout if the gate was left open.

All breeds have the potential to "run away" if not properly leashed/enclosed. Period. Even Toy breeds can take off for any reason at any time.

If you don't plan to use a solid fence, then use a tie out and you won't have to worry about boundary training (which may or may not work on ANY breed) or the dog getting loose.

Most shelters and breeders will not sell a dog to someone if they do not plan to properly contain the animal ("properly" may vary, but in general they want an actual fence or a tie out line of some sort.

EVERY DOG. There is no special breed that will roam around outside, then stop at a certain point and turn around. Any dog will see a rabbit, get curious, chase after it, and end up accidently running away. And not all dogs are smart enough to find their way back home.

huskies, terriers, hounds

anything with a high drive is not likely going to respect the boundary of the fence.

You dont need a solid fence around all 12 acres.. but the dog does NOT need full access to all 12 acres either.

Most dogs(of all breeds) give half a chance, will run off.

Breeds notorious for jumping, digging under, maneuvering ways out of and/or squeezing through holes are Huskies(or most nothern breeds...like Malamutes), JRT or most terriers generally, and cats. Haha. Jk.

Most of the toy breed vermin hunters will run if off leash. These breeds were bred to work independently and are tenacious and aggressive in getting the job done.

Give a MInpin a rabbit to chase, and you will never see your dog again!

Whippets, Greyhounds, any of the "sight" hounds, Beagles to name a few.

Definitely Huskies and Grey hound. They LOVE to run.

Pit bulls they jump sooo high!