Bite strength is measured in terms of pounds per square inch. The author shares the dog breeds with the most bite strength. The Kangal, a shepherd dog from Turkey, has the strongest bite force of 740 PSI. Some breeds have more bite force than a lion.
Source: Puppies and Pooches, June 9, 2021. Link. Studies indicate that dogs with large heads, big bodies, and broader jaws have more bite power.
Also see: 20 dogs with the strongest bite force, TopDogTips, February 5, 2021. Link.