Dog Age Calculator debunks the outdated "1=7" myth with science-backed AAHA veterinary guidelines & breed-size biology. 🌟 Highlights: • Size-weighted biological age for dogs & cats • 10+ viral share card styles (Pet Driver's License, SSR Trading Cards, Polaroid Pop & more) • 🌈 Rainbow Bridge memorial tribute mode for deceased pets • 100% free, client-side rendered with zero data tracking