I’ve recently published a Checklist of the Mammals of Rwanda in the Journal Of East African Natural History.
Zarek S. Cockar “A Checklist of the Mammals of Rwanda,” Journal of East African Natural History 111(1), 1-17, (9 May 2022). https://doi.org/10.2982/028.111.0101
(Click on the DOI above for a link to the abstract). If you do not have access to BioOne, you can email me on zarekcockar @ gmail DOT com (I don’t put in my correct email address here to avoid spam bots picking it up, but no spaces and obviously the DOT is represented by a .) and I’d be happy to send you the PDF manuscript for free.
Note that this checklist only covers the primary protected areas and the shores of Lake Kivu, rather than the entire country. Therefore, some species that occur in Rwanda are undoubtedly missing from the list.