Jamaican fruit-eating bat CCL11 (C-C motif chemokine ligand 11), also known as eotaxin-1, is a member of the CC chemokine family that regulates eosinophil recruitment and type 2–associated immune responses in Jamaican fruit-eating bats (Artibeus jamaicensis). CCL11 is produced primarily by epithelial cells, fibroblasts, endothelial cells, and activated immune cells in response to Th2-associated cytokines such as IL-4 and IL-13, and it functions through the CCR3 receptor to promote chemotaxis and activation of eosinophils, as well as certain Th2 lymphocytes and basophils. In healthy A. jamaicensis, basal CCL11 expression is expected to be low, but levels may increase during parasitic infections, allergic-type inflammation, tissue injury, or immune stimulation. As bats exhibit unique immune tolerance to viral infections and serve as reservoirs for multiple zoonotic pathogens, characterization of CCL11 in Jamaican fruit-eating bats is of interest in comparative immunology and emerging infectious disease research, particularly for understanding regulation of Th2-biased immunity, eosinophil biology, and mechanisms that balance pathogen control with limited immunopathology.