Are there other species that have 'Midgets' or 'Dwarves' besides humans?

Either way, I got to post a link to a dwarf elephant. Isn’t that enough?

He does sound like the elephant equivalent of Tyrion Lanister. You might get around with bullying him in the short run [ETA: oops, unintentional], but he’ll be back with a crossbow when you’re on the loo.

He’s certainly a sporadic mutant, fits the bill of what the OP was asking about completely, I think. Elephants have FGFR3, the achondroplasia gene, and there are other articles saying that’s what it is, although I can’t find any primary source saying that they have taken DNA samples. I should be easy to verify the mutation if it’s in FGFR3.

Planets! Lets not forget about the dwarf (dog) planets.

Internet-famous Grumpy Cat and her brother (but not littermate) Pokey both have feline dwarfism.

And of course (natural) dwarf trees.

Bush flies. The little ones are permanently stunted because the egglayer didnt scrape together enough protein before offloading the eggs into a cowpat. I.e the little ones never get any bigger.

Dwarves and midgets are pretty rare among humans, too. I’ve seen lots of humans in my life. I’ve lived in major cities and done a lot of traveling. I’d guess that I’ve seen a thousand times as many individual humans as I’ve seen individuals of any wild mammal. But outside of circuses and movies that specifically selected for extremely short people, I have only ever seen two dwarves and one midget, and I’m pretty sure the dwarves were related.

(and I’ve never met either. These are people I saw in a subway station, or a department store.)

Looks can be deceiving. My cat once tried to chase down what I thought was a gigantic mouse, but it turned out to be a baby kangaroo.

He should stick to Tweety Birds…

Yes, dwarfism of all types is estimated to affect 0.0001% (1 out of 10,000 people) in the USA.