Beausoleil completed a PhD titled Behavioural and physiological responses of domestic sheep (Ovis aries) to the presence of humans and dogs at the Massey University.

[2] Beausoleil is Chair of the editorial board of the New Zealand Veterinary Journal, the first woman and non-veterinarian to hold the position.

She serves as scientific expert on the Australia New Zealand Council for the Care of Animals in Research and Teaching.

[2] In 2020 she was involved in a review of the Victoria State Government's Wildlife Act, as international expert.

[2] She co-led the development of the 'Five Domains' model of animal welfare, which has been widely adopted both in New Zealand and overseas.