In much the same way that a dog's aggression will have more to do with its environment and upbringing than its breed, its jaw strength will depend very much on its lifestyle. Whilst it could be assumed that pitfalls or Staffordshire bull terriers have extremely strong jaws, a dog which regularly exercises its bite will likely have more force than one that does not.
With this in mind, there have been some studies carried out and some scientific observations made. For example, the wider a dog's jaw is, the more force it will have. A dog with a broad head and a large build will be stronger than your average German shepherd.
The mastiff has a history of being believed to be the strongest biter. It was used in gladiatorial competition in ancient Rome against lions, and one of its defendants, the rottweiller, also has an impressively strong jaw.
The current record holder, however, is the Turkish kangal. It has been recorded as having a bite equal to 714 lbs! This is stronger than a wolf and a bulldog put together, and is a result of its wide jaw and heavy build.
One thing worth noting is that a dog being tested by biting down on a pressure sensitive sleeve may now be delivering its strongest possible bite - and it would be highly impossible to determine if it was. The Turkish kangal's record holds face validity due to its jaw shape and build, but it is possible the mastiff could have a stronger bite if the dog tested simply wasn't trying as hard as it could have done!
Their I no accurate way to measure bite force/p.s.I. In a dogs jaw there are to many factors. What ever dog you favor you can find evidence to back it because testing was never reliable in the first place.
French mastiff is real high on the list as is all mastiff breads ,,great danes and irish wolf hounds would surprise a lot of people if tested,, those russian herding molossers and the korean fighting mastiff would all do great ,, my money goes on the tibetin mastiff or the mongolian mastiff
From what I know the english bulldog ,once they bite down on something they can not be removed without breaking the dogs jaw...unless the dog decides to let go..at least that is what was said on a dogshow...
The mastiff has the most powerful bite force follow by grey wolf then rottie then shepperd and pitts are after them. As other people have said it all has to do with the size of the animals head. I have had several of the dogs listed and from my experices the mastiffs are by far the most powerful eating large bones twice as quick as the other dogs
I have shepherds, They bite very hard, I have 1 bitch who is very large 9st with a huge head and she bites much harder than the others, I also have a belgian, bites hard and fast but not mega strong jaw, I no of some english bull terriers and there bite don't seem that hard, Rotties and mastiffs bite much harder than my shepherds, and staffs don't seem to bite that hard at all, I only going on games played , watching them chew bones, Play fighting ect,
Whoever thinks its the Dogue de Bordeaux, have obviously been watching too much "Turner and Hooch, its not necessarily the size of the dogs head that counts, if this was the case, it would be the Old English Mastiff, which the current largest dog in the world, Hercules, happens to be.
I grew up with old english mastiffs in my home, but now I breed rottweilers, and in my opinion, they have the strongest bite that I know of. I have still yet to find an indestructable toy for my dogs, as they'll even destroy a car tyre between them. I would be very dubious about any dog bite measuring tests, as a dogs bite will certainly vary a lot depending on how wound up and angry it was.
Pitbulls are nice had a red nose. Rotties are nice had one at 145 and a german one at 120lbs. Had a real german shepard from berlin germany, nice do super smart. My current dogs Fila and boerboel are way stronger and either could kill any pit and they weigh 170- 195- 200 and could kill most dogs. Their bite pressures are 645 fila and 630 boerboel. The Kagal is like 715 and 20-40 lbs less weight so please do not tell me pits are the king of the bite because I have 10K that says your wrong.
I was told that the pitbull has the strongest biting force. They can also lock their jaws up too. I am not saying anything wrong about a pitbull 'cause I have 3, and they are great dogs when you treat them w/ the respect they deserve.
By answering this, I in no way am advocating the mis use of the animal by stupid ,dumb people. The dog already has a bum rap because of those stupid people. The rottweiller has a biting force of 130psi per square inch.the best dog on the planet. Most intelligent. A lot of police depts are using them because they learn faster than sheppards and listen to command better.
Actually,...if you do your homework, the Rottweiler has the strongest bite force with a jaw pressure of 3000 per square inch, followed by the german shepard. These "pit bulls" are derived from English Bull Terriers that are known for locking they're jaws while biting, doesn't really make a difference tho, unless you are an idiot that thinks having the meanest dog is cool.
Actually its a american pitbull go do your research the rotty does not have 3000 psi it has lock jaw unlike the pitbull which by the way does not have lock jaw and guest you r correct a pitbull is 1 bite away from the hyena the strongest jaw pressure I'm te world is....you wont believe this but it a wolverine weighing in at a whopping 60 pounds the wolverine has the most powerful jaw there is eating throw bone like its straw