What animal could be described as a cross between a squirrel & a rabbit, in terms of appearance, lifestyle,eco-niche,or evolutionary history?

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Living Or Extinct of course

Answer 1

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A pika is more closely related to a rabbit, but looks like a rodent that squirrels are part of.

Lagomorpha are pikas, rabbits, and hares, and one level up is glires to include all rodents.

The Patagonian mara, a large rodent resembles a jackrabbit.

https://en.wikipedia.org/wiki/Patagonian_mara