What is the simile for a march hare?

There isn't a standard simile for a march hare, but here are a few options, depending on what aspect you want to emphasize:

For its wildness and energy:

* As wild as a march hare

* As frantic as a march hare

* As energetic as a march hare

For its unpredictability:

* As unpredictable as a march hare

* As erratic as a march hare

For its madness:

* As mad as a march hare

* As crazy as a march hare

It's also worth remembering that the phrase "mad as a march hare" is itself a simile.