Bo ranks #240 with 458 entries and is one of the shortest pet names in the chart — a single syllable, a single open vowel. The brevity is the appeal. Owners who pick Bo are usually leaning into compact, easy-to-call simplicity, and the name's most famous recent occupant was the Obama family Portuguese water dog (2009-2021).
The Obama Bo lineage
Bo Obama, a Portuguese water dog gifted to the family by Senator Ted Kennedy, lived in the White House from 2009 until his death in 2021. The visibility put the name and the breed into broad cultural circulation. Pet Bos and Portuguese water dog Bos both spiked in the 2009-2012 window and have held a steady tail since.
One counter-reading: Bo also functions as a country-Americana male name (Bo Duke in The Dukes of Hazzard, 1979-1985; Bo Diddley, 1928-2008), and a subset of older owners pick the name from those sources. The two lineages — White House and country-Americana — coexist comfortably, with the country-Americana version usually the older owner's default and the Obama version the younger.
Breed fit and sound
One syllable (BOH), open vowel, exceptionally easy outdoor recall. The compactness makes Bo one of the most acoustically efficient names in the chart. The name lands across breeds with concentration on Portuguese water dogs, Labradors, and friendly mid-sized mixed breeds.
Adjacent picks
Owners cross-shopping short male pet names often consider Boo and Buddy. The broader short-name cluster sits at pet-names. Gender skew is heavily male, and the name's brevity makes Bo one of the easiest pet names to teach a young puppy — recall training is faster with single-syllable open-vowel calls.