Edit: source is Pearls Before Swine by Stephan Pastis.
The #Alttext states the goat is asking for Keith Moon while the mouse does.
Where you (reasonably) so confused after reading the strip to mix them up? 🤪
I doubt AI would provide a useful description of this image - it's too complex.
Anyway, I thought it was funny to mix up the characters in the alt text (but not good for those relying on these descriptions, of course).