I think training dogs are the least of their concerns right now. Either one of two things happened here:
1) the FSB was totally unprepared for it (the first was right under the Lubyanka for heaven's sake), so you have to wonder how ready the FSB is to deal with this sort of thing
2) They are just shifting the blame to Chechyns, or they were almost allowed to do it, so Russia can ramp up the fighting in the Caucuses. That's not without precedent in recent Russian history.
-"Grey. You said green men. A Reticulan's skin tone is actually grey. They're notorious for their extraction of terrestrial human livers, due to iron depletion in the Reticulan galaxy."
-"You can't be serious."
-"Do you have any idea what liver and onions go for on Reticula?"