I've always wondered about this. It's much more noticeable in rats, although mice and I suspect other rodents do it as well.
When a rat or mouse has to climb across from one surface to another and it involves stretching to bridge a gap, they have this really clever way of moving their body mass across. The overall appearance is that they "draw" their back legs behind them without having to hop, without overbalancing and without any signs of them holding on like grim death with their front paws.
I've watched it countless times but never filmed it in slow motion to see. Do they suck all their guts forwards or something?
Anyone else wondered about this?
Ask not what your rodent can do for you...