I tink if the panning effect was in the same direction as the way the animal is facing would have been better? The last time i went to the zoo the lighiting was not as good and only got a few decent shots out of it The cheetahs were my most cooperative subjects..
Btw the reason why most of the animals are lathargic that is bacuse they might be either nocturnal or dinural(nocturnal = active at night, dinural = active during dawn and dusk) . Most are active at anytime though but living in the zoo is very different fomr being in the wild so thier activity patterns might not be the same.