How tall is the slave-bunny David Birkenhead?

2018-06-16 09:52:15

I'm currently reading through the David Birkenhead by Philip Guesz book series.

In the series our hero, the titular genetically engineered slave-bunny, swiftly rises through the ranks of a Royal space navy.

However in several places when interacting with humans they invariably bend down to look him in the eye. Is there anywhere it mentions his actual height?