I'm very surprised at the number of mammals I saw on this trip too! If you had asked me before hand to guess how many mammals I would see I would have said 10, maybe 15, but in fact I saw 27! I did miss Banded Leaf Monkey though, which I thought was almost a given at Kaeng Krachan.
My (wild) mammal life list including multiple subspecies of the same species is approximately 201 (approximate because I'm not exactly sure how the Variable Squirrel subspecies will work).
Excluding multiple subspecies of the same species it is 169, however many of those species where I have seen multiple (sub)species are sometimes split, most notably about 20 of those are split by Groves and Grubb so the number 169 does not include things that seem to be more widely split like giraffes.
Depending on taxonomy, the number will be between 169 to 201. What's your total?