Pet Battle: [1-2] Durotar; [6-7] Wetlands; [11-12] The Hinterlands; [15-16] Burning Steppes; [15-16] Un'Goro Crater; [22-23] Icecrown; [23-24] Twilight Highlands;  Gorgrond
Crawls about, waving antennae.
100% Hit Chance
Scratches the enemy, dealing 394 Critter damage.
Flanks the enemy 1-2 times, dealing 197 Critter damage per hit.
Hits an additional time if the user attacks first.
Deals 394 Beast damage and reduces the target's speed by 25% for 4 rounds;.
You endure, preventing your health from being reduced below 1 health until the end of the next round.
Pets affected by Survival will survive an Apocalypse.
100% Hit Chance
Starts a swarm, causing 177 Critter damage.
Opponents struck by the swarm take double damage for 2 rounds.
Swarm continues for 3 rounds.
Calls down a meteor, which will fall 15 rounds from now, instantly killing all active pets.
Cockroaches and Beetles always survive this attack.
Critters are immune to stun, root, and sleep effects.
50% from Beast abilities
33% from Elemental abilities
Ewwww a cockroach with almost "3 stars".
Fly around Sindragosa's Fall in Icecrown and target Scourged Whelplings. Each one comes with two Cockroaches as secondary pets to battle. Although there are only about a dozen of the Scourged Whelplings flying around (and respawn is a little slow), in the battles I had three rare Cockroaches turned up. Don't know if this is common, but thought it was worth a mention to anyone who might be looking for a good opportunity to capture a high level Cockroach.
Roaches are great specialists against the legendaries that can outheal or outdamage most teams. Armegeddon and switch to mechanical or undead for survivability and depending on opponent and as long as your roach survives 15 rounds you win!
I seldom use roaches in any other capacity because their other skills are done better by many other pets.
There is also a level 1-2 cockroach in Durotar right by/under the tower northwest of Razor Hill (where the Darkspear Rebellion Quartermaster is).
Can also be found as a primary & secondary in the Wetlands, either northwest of the Greenwarden's Grove amongst the Tiny Bog Beasts or east of Greenwarden's Grove.
I had some difficulty at first finding the cockroahces in Icecrown as well, but there are tons of them. They seem to spawn in a very spread out manner. The best method I've found is to fly around the main "horseshoe" shaped area along the edges where the ice cracks apart against the mountains. By the time you do a full lap of the outer and inner edges of the horseshoe, the ones where you started will have respawned already. Visit Ymirheim and the Nerubian place if they get too thinned out.
Cakebaker was asking about Cockroaches in Icecrown.Sorry to inform the other posters but the Hinterlands is not in Northrend so their postings are useless.I also can't seem to find any Cockroaches in Icecrown,yet.I too am trying to find these for the Achievement.
Found the cockroaches at Ymirheim.I hope this Helps.
I want the northrend tamer achievement and only have Icecrown left on my list. However, I cant seem to get my hands on a Scourged Whelpling, so I'm trying to find a cockroach from Icecrown but they seem so few and far between.
There are a bunch of Cockroaches in The Hinterlands in Jintha'Alor. Some are in odd areas that obstruct the battle, but I was able to get mine here.
Found my cockroach in Hinterlands. Didn't see any roaming around, but were the second when battling hares and jade oozelings. If you see one appear as a second go ahead and grab it. Marmots, hares and oozelings are plentiful, but couldn't find any lone cockroaches myself.