101 Dalmations (1961)
The greatest talking dog movie of all, expect perhaps for Lady and the Tramp, 101 Dalmations chronicles the romance of Pongo and Perdita, the birth of their 15 — no 14 — no 15 pups, and the unlikely chain of events that brings 84 additional dalmations into their family.
It is the first film to portray, on film, the Twilight Bark.
There are also some humans in it, too, who sing some pleasant-enough songs.