Capricorn - the Rooster
The Rooster decides that we shall wake up when the Sun comes up and cock-a-doodle-doos to make sure we do, just as Capicorns like to control their world and set the rules and regulations for the rest of us. Saturn and Capricorn rule the bones and skeletal system, and so does the Rooster and the Kidney meridian rule bones, teeth, and the skeletal structure.

Aquarius - the Dog
The Dog is a friendly animal and, like the Aquarian, can be open to all who treat him right. But the Aquarian also has an iconoclastic side, and retreats from humanity. He loves humanity as a whole, but may not like them on a one-to-one basis. So, too, the Dog can be open and guileless as a puppy, or get territorial and bark loudly and create a boundary through which no one is allowed unless invited. The Circulation-Sex meridian rules here, inclining people to be reserved, cautious, and shy, with sexual intimacy issues at times. Aquarians are known to love everyone, but be awkward in one-to-one relationships.

Pisces - the Boar
Pisces has been called the collective garbage can of the universe, encompassing all of the other eleven signs. Pisceans are known to have deep depressions that are hard to pull out of. The Boar deals with hope and hopelessness, and can fall into a bog of despair. He needs to rise to the heights of spirituality and light, and not stay in the darkness.

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As you can see, the correlation from the meridians to the signs works pretty accurately this way. I've tried to work the meridian emotions with the other Sun sign-animal systems that are in print, but they don't resonate as this system does.

If I were God and could move the wheels around, I'd tend to switch Virgo and Scorpio. I'd assign the Snake to Scorpio and the Sheep to Virgo. Certainly, the Snake has aspects of the Scorpio inclination to bide its time and get even, striking when the time is right. Scorpions don't like rejection and will wait to get even. It's a form of not being in the right.

We could also lay claim to Scorpio for the Monkey. In traditional astrology, the Bladder is a Scorpio organ, and certainly the Monkey is in control and will override anything in its way that it doesn't agree with.

But, in fact, we could probably write a sound argument for the animals reflecting most of Pluto's tendencies, since Scorpio/ Pluto rule the masses and are a motivational part of us all. My feeling with the Sheep being assigned to Scorpio in this system is that it's simply a matter of understanding the Sheep and it's psychological motivations more deeply. Certainly, Pluto is the planet of the masses, and our collective evolution and growth, and the Sheep would represent the herd or the collective consciousness that is in constant evolution and growth.