Figure 23: 
shows the ideal outline. The line of the back from withers to rump should be level. The body should be long and muscular. Too short a body gives a "cloddy" appearance. The underline should not be "tucked up" to the abdomen (like a Greyhound). One head length equals neck length; tail length, and body depth. And, three head lengths equal length of the body from breastbone to hock.

Figure 24:
Shows a hollow back (sometimes known as "soft in back")

Figure 25:
Shows hindquarters higher then the shoulders.

Figure 26:
Shows a roach back, where the back is arched between the withers and  rump.