A cat could imitate a pedal steel guitar or an electric guitar played with a slide.
One time after I played Are You Experienced, l heard some birds outside my open window doing their version of Foxy Lady. ;-o
Although I’ve never heard one, maybe trumpeter swans can imitate trumpets?
The call of a loon sounds somewhat like a flute.
IIRC, some paleontologists hypothesize that the calls of duck-billed dinosaurs sounded like oboes or quenas (Andean flutes).
From what I recall, some cetacean sounds resemble those of bassoons or oboes.