Everyone knows that there's about seven dog years in a human year.
The same interesting conversion takes place in linear measurements. There's about seven dog feet in a foot of the English measurement system.
To avoid confusion, some writers call a dog's foot a "paw."
Writing does get confusing. I've been accused of exaggerating when I say that I jumped 20 feet into the air to catch the frisbee. 20 dog feet is about 3 feet in the English system.
Some of my best jumps are well over 20 feet, but my human is too doltish to do the measurements right.