Roar

Quest: Mastering the Menagerie [1]

Zone: Lunarfall, Frostwall

Drop: Big Bag of Pet Supplies

Approximate Drop Rate: 1 in 40

Guild Achievement: Critter Kill Squad

Category: General

Vendor: Guild Vendor - Guild

Cost: 300 (unlimited supply)

Quest: Adopting the Adorable [10]

Zone: Val'Sharah

Pet Battle: [9-10] The Cape of Stranglethorn

Weather: Rain

Achievement: WoW's 4th Anniversary

Category: Feats of Strength

Trading Card Game: Through the Dark Portal

Scenario: Island Expeditions

Approximate Drop Rate: Unknown

Achievement: Littlest Pet Shop

Category: Collect

Drop: Ebon Whelp [10-30]

Zone: Wetlands

Drop: Searing Whelp [15-30], Searing Hatchling [15-30]

Zone: Dustwallow Marsh

Drop: Scalding Whelp [15-30], Nyxondra's Broodling [15-30], Raging Whelp [15-30]

Zone: Badlands

Drop: Flamescale Broodling [15-30]

Zone: Burning Steppes

Approximate Drop Rate: 1 in 1100

World Event: Darkmoon Faire (first week of each month)

Vendor: Lhara

Zone: Darkmoon Island

Cost: 90 (unlimited supply)

Drop: Darkmoon Game Prize

Zone: Darkmoon Island

Approximate Drop Rate: 1 in 1,250

Pet Battle: [3-6] Darkshore

Promotion: BlizzCon 2010

Trading Card Game: March of the Legion

Vendor: Derrick Brindlebeard

Zone: Icecrown

Cost: 40 (unlimited supply)

Scenario: Island Expeditions

Approximate Drop Rate: Unknown

Pet Battle: [1] Orgrimmar; [1-3] Ironforge

World Event: Feast of Winter Veil

Vendor: Auction House

Vendor: Varlan Highbough

Zone: Molten Front

Cost: 1500 (unlimited supply)

Pet Battle: [6-7] Hillsbrad Foothills

World Event: Mists of Pandaria Timewalking

Vendor: Mistweaver Xia

Zone: Timeless Isle

Cost: 2200 (unlimited supply)

Pet Store 

Promotion: Korea World Event

Promotion: World of Warcraft Collector's Edition

Promotion: iCoke

Drop: Mysterious Egg after 3 days becomes [Cracked Egg]

Contains: 1 in 5 options