I’m a big fan of the objectification this set-up creates. The heavy and full coverage dog suit is dehumanizing – and therefore hot – in its own right. The suspension bondage reduces agency still further. The motorized milking machine will drag a specific reaction from his body whether he likes it or not. The fact he can helplessly flail those stubby limbs around but change nothing makes for a lovely finishing touch.
The creator of this scene is Mistress Hinako and she posted this along with a short video to her Twitter feed. As she says there – ‘I wake up early every morning to milk my dog’.

If Mistress Hidalgo put a timer on the power socket, she could have a delicious lie-in, knowing that her dog’s milking needs were being looked after while she snoozed. But it’s not for me to give advice to a domme.
Best wishes
S
Eeek! “Hinako” Sorry, Ma’am!