Toto ranks #455 with 269 entries, registered male. The name belongs almost entirely to a single cultural source: Toto the Cairn Terrier from The Wizard of Oz, first appearing in L. Frank Baum's 1900 novel and immortalized in the 1939 film. There is essentially no other naming tradition feeding Toto's American adoption.
The Wizard of Oz lineage
The Toto-Dorothy connection is one of the most permanently embedded animal-and-owner pairings in American pop culture. The 1939 film cemented the visual: small scrappy black terrier, alert and brave, devoted to the protagonist. Owners picking Toto are almost always referencing this lineage, often consciously, sometimes through a parent or grandparent who watched the film annually.
Breed lean and visual fit
Toto lands disproportionately on small black terriers and terrier mixes where the Cairn Terrier reference matches directly — Cairns, Yorkies, Jack Russells, Schnauzers, Scotties, Westies, and small black mixed breeds. The visual specificity of the name is unusual; very few names lock to a particular breed silhouette this strongly.
The Toto band counter-reading
Worth flagging: a smaller cluster of owners reach the name through the rock band Toto (active since 1977, with hits like Africa 1982 and Rosanna 1982), giving the name a different musical register. The two readings coexist without conflict because both are warm, slightly nostalgic, and unmistakably American. The human Toto page shows essentially zero SSA presence across recent decades; this lives entirely on the pet side, owned by the Wizard-of-Oz lineage almost without exception.