To name my characters, I like to go to the old baby names websites. I especially like the early 20th century era names. One like the website below lists the top several hundred boy and girl names from each decade.
Using 100-year-old popular baby names, I've named my duck Floyd, my bassett hound Buford, my crybaby Gilbert, my Buster (boy) Ferris Wheeler, my vulture Igor (spelled EeeGore), my lion Herb (he's a herbivore), and my big bear, George (ala the "Which-way-did-he-go?" big cat from the Warner Bros. cartoon shorts).
If I liked or had more range with my feminine voice at all, I'd have chosen names like Bertha, Myrtle, Olga, Hattie, Fannie, etc., for my characters. The only female I choose to do is my ostrich, which I've named Clare.