Cheeky monkey

One of my favourite shrines at Phnom Oudong, and there are many, is this one showing a large and cheeky-looking monkey, just before you reach the main series of royal family stupas at the summit of the mountain. Its next to a large collection of laterite building stones that would suggest the former presence of an ancient prasat at the site (to coincide with other finds of pedestals and lintels in other locations), or that these blocks were used for construction of the stairways leading to the top. Without an expert archaeologist on hand I couldn't confirm either way and no-one knew the name of the monkey either. If you know the name of this popular shrine, please let me know. What I'd like to know is what the troop of monkeys that inhabit Phnom Oudong feel about this grey-coloured cousin of theirs. Do they worship him too?