When developing either a feed additive or a medication for cats, it is imperative to recognize the critical differences and considerations unique to this species. Cats possess a distinctive liver metabolism characterized by limited enzyme activity, particularly the absence of glucuronyl transferase, which complicates their ability to metabolize certain drugs and toxins. This necessitates a thorough understanding of absorption and overall drug metabolism, as the absorption, distribution, metabolism, and excretion (ADME) of substances can differ markedly from other animals. Dosage is another pivotal consideration; cats require species-specific formulations, as their metabolic rates can lead to increased sensitivity to overdosing. The incorporation of essential nutrients—such as taurine and arachidonic acid—reflects their obligate carnivore status, while product palatability remains essential for compliance due to their discerning eating habits. Furthermore, product safety must be paramount. Common toxins, including certain foods and medications fatal to cats, must be meticulously avoided. Rigorous safety and efficacy trials under veterinary supervision are essential to comply with regulatory standards set forth by organizations such as the FDA or EMA. Ultimately, understanding the physiological, metabolic, and behavioral intricacies of cats ensures the successful development of effective and safe products tailored to their unique needs