Im highly certain you cannot. I also remember reading it in the editorial, im 99.9999% that them people/person is lying.
From what I've heard, there have been 2 confirmed cases of Draik zaps, none of Krawk. And theoretically, it's possible, but TNT programmed the lab to have an insanely minuscule chance of it happening. (That's what I remember from editorials, though I nowhere near remember which editorial. =/)
Let's clear this ALL up. Krawks and Draiks are POSSIBLE to obtain. However the chance is probably like one in a million or whatnot. Ice pets ARE obtainable through the Lab Ray. Only Ice Boris are not.