Pet tranquilizers are pharmacologic agents designed to reduce anxiety, stress, and agitation in companion animals, supporting veterinary care and enhancing pet welfare. The Pet Tranquilizer market size was estimated at approximately USD 1.4 billion in 2025, and the growth outlook projects a robust expansion to USD 2.3 billion by 2033, reflecting a CAGR of roughly 6.4% during the forecast period 2026‑2033. Key macro drivers include rising pet ownership, heightened awareness of animal mental health, and increasing veterinary prescriptions for anxiety‑related conditions. The industry is shaped by three dominant forces: advances in delivery technologies (e.g., transdermal gels, chewable tablets), evolving regulatory frameworks that streamline drug approvals, and shifting consumer behavior toward premium, preventive pet care solutions. North America remains the largest market, while the Asia‑Pacific region is emerging as the fastest‑growing segment.