Mammal Checklists from Stuart On Nature
Chris and Mathilde Stuart, the biologists and prolific authors of field guides, have just uploaded a collection of mammal checklists from various parks in several countries. They have compiled these over the years and their site has checklists from a bunch of places in South Africa, Zambia, Botswana, British Columbia, Florida, Austria and Western Australia.
These should be useful if you are visiting any of these areas.
Their lists are here https://www.stuartonnature.com/checklists.php