Flock

Vendor: "Plucky" Johnson

Zone: Thousand Needles

Cost: 1 (unlimited supply)

Pet Battle: [1-2] Tirisfal Glades; [1-2] Elwynn Forest; [3-4] Westfall; [3-6] Bloodmyst Isle; [4-6] Redridge Mountains; [5-7] Duskwood; [6-7] Hillsbrad Foothills; [20-22] Howling Fjord

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: unknown

Pet Store 

Pet Battle: [23-24] Twilight Highlands

Vendor: Adrey Burnhep, Varzok (Pandaren only)

Zone: Stormwind, Orgrimmar

Cost: 50 (supply of 1)

Drop: Ji-Kun [??+]

Zone: Throne of Thunder

Approximate Drop Rate: 1 in 1000

World Event: Pilgrim's Bounty

Achievement: [Pilgrim]

Category: World Events

Pet Battle: [23-25] Kun-Lai Summit

Pet Battle: [20-22] Howling Fjord

Quest: CLUCK! [4]

Zone: Westfall

Pet Battle: [23-24] Twilight Highlands

Pet Store