One blast from a Star Destroyer's heavy turbolasers would be enough to obliterate a Borg Cube and the one behind it.
the sheer firepower of one of those seismic charges
According to technical manuals produced for Star Wars
This is a Caatati:
Why the heck would the Collective want to assimilate a species that is as close to "humanoid rodent" as you can get?? I mean, LOOK AT IT!
The Borg have said that some species are not worthy of assimilation, as they would be driven further away from perfection rather than towards it! I say the Caatati is one of those races - I mean, what can they offer?