157 | A Preliminary Study on the Interplay Between Serum Neurotransmitter Levels and the Behavioral Phenotype of Canis Familiaris: Federica Arrigo1, Raffaella Cocco2, Claudia Giannetto1, Giuseppe Piccione1, Alberto Cesarani3|4, Giuseppe Pulina3, Sara Sechi2, Francesca Arfuso1 | 1Department of Veterinary Sciences, University of Messina, Messina, Italy; 2Department of Veterinary Medicine, University of Sassari, Italy; 3Department of Agriculture, University of Sassari, Italy; 4Department of Animal and Dairy Science, University of Georgia, Athens, GA, USA. J Biol Res 2026, 99 (s1). https://doi.org/10.4081/jbr.2026.15409.