When a dog has a short back or the appearance of one in many dog breeds, it is admired and commended.
Being a square. This may be aesthetically appealing for some breeds, but it is not feasible for the Rottweiler. His front and back legs will cross over excessively under the center of his torso, making movement extremely difficult if he is designed appropriately (overreaching). If it happens when grounded (with all four feet on the ground at once), it could be a significant issue.

If properly constructed, an ideal Rottweiler that is 10% longer than its height will also look compact.
However, this length will provide the back legs enough room to pass over the front legs without being unduly crossed. These are the perfect dimensions to produce a harmonious aesthetic appearance while standing and a harmonious movement when moving.

Acceptable
A Rottweiler’s body length cannot surpass its height by more than 15%, according to the norm.
A Rottweiler that is 15% longer nevertheless has an aesthetically pleasing appearance. They shouldn’t have any issues with foot timing when moving if they are well-built across the body, but much more could cause issues with toplines and turning agility.

Too long
Even if the dog is well developed in the quarters, the ideal aesthetic appeal is lost when the Rottweiler’s body is too lengthy in relation to its height because the dog starts to look a little racy and loses that compact look. A lengthy body, especially in the back, can impair quickness while turning and cause a weak topline when moving.