If you're talking about the one who was always peeing on the floor in the live action 101 Dalmatians then it's most likely Whizzer you're thinking about.
101..
The dalmatian that is always hungry is named Rolly. (He is my favorite puppy in 101 Dalmatians!)
101 dalmations
101 hence 101 Dalmatians.
There were 101 dalmatians in Dodie Smith's story.
101 Dalmatians
101 hence the story title 101 Dalmatians
101 Dalmatians
101 Dalmatians
the amount of dogs in 101 dalmatians
Ninety-nine dalmatians went missing.
101 Dalmatians. It is a famous book (The Hundred and One Dalmatians), a 1961 animated movie (One Hundred and One Dalmatians), and a 1996 live action/animated movie (101 Dalmatians).