yesterday at my LFS they had som dwarf puffers. I couldn't believe the size of them. Approx. 1 cm long! I don't know how you could call them tiny terrors.
Just using the term from the post I was linking to. From reading the related posts from the same author I think that Tiny Terrors is meant as cute little pet name (I think their other fish might disagree). Sounds like their dwarfs have a bit of an attitude.
To say our Tiny Terrors can get a bit of an attitude is an understatement . They are my babies and I wouldn't trade them in for anything, but if one of them is harrassed all 6 of them will turn on the bully and give him a thumping . As long as none of the other fish are aggressive towards them they are mostly Ok, but they like to play "Ride the Tankmate" a little too much so I find it better to keep them to themselves (well they have the Gobies for company, but they should be in a new BW setup by this weekend ).