I have left wow, this is no longer under support. Inquire if seriously want to maintain. 

This addon adds a filter to AdiBags for sorting out the Battle Pet related items in your bags.  

Latest version is: 1.0.4

Requires AdiBags to work!

Supported items are as follows.

Miscellaneous Items

Items that dont fall into any other category

• 37431 Fetch Ball
• 43352 Pet Grooming Kit
• 43626 Happy Pet Snack
• 71153 Magical Pet Biscuit
• 86143 Battle Bandage
• 89906 Magical Mini-Treat
• 98112 Lesser Pet Treat
• 98114 Pet Treat
• 139003 Pocket Pet Portal

Currency Items

Items used to buy Battle Pet related Items

• 101529 Celestial Coin
• 116415 Pet Charm
• 151191 Old Bottle Cap

Battle Pet Containing Items

Items that are obtained that can contain Battle Pets

• 21310 Gaily Wrapped Present
• 39878 Mysterious Egg
• 112107 Mysterious Egg
• 137599 Pulsating Sac
• 137608 Growling Sack
• 153190 Fel Spotted Egg
• 153191 Cracked Fel-Spotted Egg

Supplies Bags

Bags that are obtained that contain Battle Pet Items

• 89125 Sack of Pet Supplies
• 94207 Fabled Pandaren Pet Supplies
• 93146 Pandaren Burning Spirit Pet Supplies
• 93147 Pandaren Flowing Spirit Pet Supplies
• 93148 Pandaren Whispering Spirit Pet Supplies
• 93149 Pandaren Thundering Spirit Pet Supplies
• 91086 Darkmoon Pet Supplies
• 98095 Brawler's Pet Supplies
• 116062 Greater Darkmoon Pet Supplies
• 118697 Big Bag of Pet Supplies
• 122535 Traveler's Pet Supplies
• 127751 Fel-Touched Pet Supplies
• 120321 Mystery Bag
• 116202 Pet Care Package
• 142447 Torn Sack of Pet Supplies
• 143753 Damp Pet Supplies
• 146317 Mr. Smite's Supplies
• 151638 Leprous Sack of Pet Supplies

Rare Stones

Items that increase rarity of Battle Pets

• 92741 Flawless Battle-Stone
• 92679 Flawless Aquatic Battle-Stone
• 92675 Flawless Beast Battle-Stone
• 92676 Flawless Critter Battle-Stone
• 92683 Flawless DragonkinBattle-Stone
• 92665 Flawless Elemental Battle-Stone
• 92677 Flawless Flying Battle-Stone
• 92682 Flawless Humanoid Battle-Stone
• 92678 Flawless Magic Battle-Stone
• 92680 Flawless Mechanical Battle-Stone
• 92681 Flawless Undead Battle-Stone
• 92742 Polished Battle-Stone
• 98715 Marked Flawless Battle-Stone

Level Stones

Items that add levels to Battle Pets

• 116374 Beast Battle-Training Stone
• 116416 Humanoid Battle-Training Stone
• 116417 Mechanical Battle-Training Stone
• 116418 Critter Battle Training Stone
• 116419 Dragonkin Gattle-Training Stone
• 116420 Elemental Battle-Training Stone
• 116421 Flying Battle-Training Stone
• 116422 Magic Battle-Training Stone
• 116423 Undead Battle-Training Stone
• 116424 Aquatic Battle-Training Stone
• 116429 Flawless Battle-Training Stone
• 122457 Ultimate Battle-Training Stone
• 127755 Fel-Touched Battle-Training Stone

Battle Pet Toys

Toys usable with all Battle Pets

• 44820 Red Ribbon Pet Leash
• 37460 Rope Pet Leash
• 89139 Chain Pet Leash
• 127707 Indestructible Bone
• 127695 Spirit Wand
• 127696 Magic Pet Mirror
• 129958 Leather Pet Leash
• 129961 Flaming Hoop
• 140231 Narcissa's Mirror

Costume Items

All items for your Perky Pug

• 103786 "Dapper Gentleman" Costume
• 103789 "Little Princess" Costume
• 103795 "Dread Pirate" Costume
• 103797 Big Pink Bow
• 116172 Perky Blaster
• 116810 "Mad Alchemist" Costume
• 116811 "Lil' Starlet" Costume
• 116812 "Yipp-Saron" Costume
• 128650 "Merry Munchkin" Costume