My Mammal of the Day was this Fallow deer. I was walking through Hanger Wood at Fingest in the Chilterns when about 30 Fallow deer started to cross the track about 100 yards ahead of me. This was the best of several photos that I took.
I also twice saw Muntjac deer on my walk today, but they were off too quickly for me to get a photo. I think I saw a weasel at one point, but it was far too fleeting a glimpse to be sure.