Mr ranks at #561 with 222 entries on file, registered male. The honest reading is that almost every line in this column is a paperwork artifact: owners typed Mr Whiskers or Mr Bean or Mr Pickles into a licensing form, the database truncated at the first space or stripped the period, and the prefix landed in the name field as a standalone token.
The licensing-form story
Cities that license pets ask for a single name on the form, and a long minority of owners write something like Mr Mittens, Mr Bigglesworth, or just Mister with a period. Different intake systems handle that input differently, which is how a courtesy title becomes a row in a registry. The 222 entries here almost certainly represent at least a hundred different actual pets.
The Mr-prefix tradition
Once you bracket the data artifact, the Mr-prefix naming style itself is real and durable. Mr Bean, Mr Peanut, Mr Pickles, Mr Whiskers, and Mr Bigglesworth all live in the same comedic register: a small or stately animal carrying an inflated honorific. The joke is the size mismatch, and it lands hardest on cats, dachshunds, and pugs. Owners reaching for the prefix usually want a name that asks to be said in full, every time.
Where to look next
If you came here looking for the right second half, the popular pairings sit on individual pages: Bean, Pickles, and Whiskers all carry the prefix well. For more in this register, browse the broader pet name index.