Ace's image is 152 pixels wide by 222 pixels high.
Grover's image is 500 pixels wide by 424 pixels high.
Bessie's image is 150 pixels wide by 211 pixels high.
Note; The images are from Perfinder.org. They were taken by Mary Lou Bernard. At the time ths exercise was first written, Ace, Grover, and Bessie (and many others) were at the Frederick Counter Animal Control Center (a.k.a. the Pound) waiting for someone to adopt them. They have found homes since then, but there are many more still waiting.