Wellness Wag: Oklahoma's Trusted ESA & PSD Letter Provider At Wellness Wag, we help Oklahoma residents access Emotional Support Animal (ESA) and Psychiatric Service Dog (PSD) letters quickly and legally. We know how important your companion is to your well-being, and we're here to support that bond. Our process is fast, fully online, and compliant with Oklahoma and federal regulations. Whether you're facing housing challenges or need continued emotional support, we're here to help you keep your animal by your side. Start your journey with Wellness Wag today.