Possible Clues:

• Org. providing assistance to Afghans and Persians
• Spot's defender, for short
• Org. that works with vets
• Vet employer, maybe: Abbr
• Org. that shelters dogs and cats
• Animal shelter grp
• Org. for strays
• Protector of stray cats and dogs, for short
• Pet lover's org
• Pet protection agcy