Caprine Interleukin-1 Alpha (IL-1α) is a pro-inflammatory cytokine belonging to the IL-1 family—which includes IL-1α, IL-1β, and the IL-1 receptor antagonist (IL-1Ra)—and plays a central role in initiating innate immune responses in goats (Capra hircus). IL-1α is constitutively expressed in epithelial and barrier tissues and functions as an intracellular alarmin that is rapidly released following cell injury, necrosis, or microbial invasion, triggering early inflammatory signaling. Upon binding to the IL-1 receptor type 1 (IL-1R1), IL-1α activates NF-κB and MAPK pathways that promote leukocyte recruitment, endothelial activation, fever, and amplification of pro-inflammatory cytokine cascades. In caprine health, IL-1α is particularly relevant in inflammatory conditions such as mastitis, pneumonia, enteric infections, caseous lymphadenitis, and caprine arthritis encephalitis (CAE), where it contributes to early neutrophil infiltration and local tissue inflammation. While essential for effective pathogen defense and tissue repair, excessive IL-1α signaling may contribute to tissue damage, chronic inflammation, and reduced productivity. As an early mediator of sterile and infectious inflammation, caprine IL-1α serves as a biomarker of tissue injury and innate immune activation. In veterinary and comparative research, characterization of caprine IL-1α supports studies of host–pathogen interactions, inflammatory regulation in small ruminants, and development of targeted anti-inflammatory or immunomodulatory strategies to improve herd health and disease resilience.