Richie Rich's dog. A Dalmatian breed with dollar signs for spots.
He hears Richie's chef making a special drink that will make him strong, to which Dollar drinks up entirely and uses his new strength in a comic fashion.
Dollar's fantasy as being the strongest dog in the world
Dollar right after drinking the muscle drink
Arms go first
Now his chest
Full muscle now
All finished growing
Not sure where those briefs came from...
Using just his fingers for those gold/diamond weights