The global veterinary antibiotics market was valued at USD 5.40 billion in 2025 and is projected to grow from USD 5.55 billion in 2026 to USD 6.36 billion by 2031, a 2.75% CAGR. Growth is being supported by rising demand for animal-source protein, expanding companion-animal ownership and higher animal-health spending, while antimicrobial-resistance rules, wastewater requirements and antibiotic alternatives constrain routine use. Poultry accounted for 32.55% of revenue in 2025, tetracyclines held the largest drug-class share at 28.53%, and North America represented 32.52% of global revenue. Aquaculture is forecast to grow fastest among animal segments at a 6.85% CAGR, while Asia-Pacific is projected to expand at 6.12% through 2031.