“…Mid-size animals such as rabbits, cats, and dogs have more complex brain functions than rodents and may be used for specialized testing such as sleep studies for cats or studies on the heart for dogs ( Pinnapureddy et al, 2015 ; Sánchez-León et al, 2018 ), whereas rabbits have been used extensively in peripheral nerve injury and repair studies ( Kim et al, 2020 ; Koppaka et al, 2022 ; Sorkin et al, 2022 ). Non-human primates (NHP), with complex brain functions most similar to humans, offer advantages for brain imaging studies, however are costly and may be difficult to procure ( Milham et al, 2020 ; Song et al, 2021 ; Hartig et al, 2023 ; Suminski et al, 2023 ). Additionally, most NHP are small, with rhesus macaques weighing 8–12 kg, and the largest research NHPs, baboons, weighing ~16 kg ( Nakamura et al, 2021 ; Song et al, 2021 ).…”