Ceirw gwyllt yw rhai o famaliaid mwyaf eiconig cefn gwlad.

Mae’r arbenigwr mamaliaid, Stuart Edmunds, yn cyflwyno’r casgliad anhygoel yma o gigysyddion.

The volunteers of the Mon Gwyrdd youth forum in partnership with the Cwlwm Seiriol project took part in an incredibly successful harvest mouse survey this winter, monitoring the populations of…

Ydych chi wedi gweld unrhyw olion traed dirgel neu faw anesboniadwy? Ewch ati i ddatrys y mater gyda rhai awgrymiadau gan Darren Tansley, y Ditectif Mamaliaid.

Grey seals (Halichoerus grypus) begin moulting during December-April.

Mae’n dymor paru i’n morloi llwyd ni ac mae’r cyfan i’w weld ar hyd arfordir Gogledd Cymru.

Right now grey seals/Morloi llwyd (Halichoerus grypus) will be returning to haul out sites all along our coasts for the pupping season.

Mae blog yr wythnos hon yn edrych ar gynefinoedd y mamal poblogaidd hwn, llygoden bengron y dŵr.

Grey seals can be quite a common site along the coastline of Wales with many people, home and away, taking trips out into the Welsh waters in search of sighting them. Whether you are already one…

Dr Catherine McNicol reveals some of the work that Wildlife Trusts are doing to bring species back from the brink.