Well spotted, VV! The pond creatures appear somewhat messy, but it's clear in the Zodiac mammals (counting scorpio too).
The funny thing is that that are made to obey the rule with both pairs of legs
Now, to make matters even weirder. In a You are not allowed to view links.
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Login to view. I formulated a similar rule for arms: if an object is held, touched or reached for, the arm furthest away from the viewer is used. There are some exceptions (dual tubes) but that doesn't matter here.
The weird thing is the following: four of the animals have items placed next to them (in a context where those items are rare) and all four of them touch the item with their far hand. So one could say that they obey both the leg and the arm rule. I wouldn't make much of it if the animals weren't so absurdly touching their items. Really, look at all four of them with the arm rule in mind.