Dog cognitive development: a longitudinal study across the first 2 years of life

Bray, E. E., Gruen, M. E., Gnanadesikan, G. E., Horschler, D. J., Levy, K. M., Kennedy, B. S., Hare, B., & MacLean, E. L. (2021). Dog cognitive development: a longitudinal study across the first 2 years of life. Animal cognition, 24(2), 311-328. doi: 10.1007/s10071-020-01443-7 [PDF]