Horse
In Ezekiel 26:11, this signifies the love of learning or intellectual things. (Arcana Coelestia 3727)
In Revelation 6:2, this signifies the love of understanding the Word. (Apocalypse Revealed 298)
In Zechariah 12:4, this signifies that the intellectual should be filled with falsities. (Arcana Coelestia 2383[2])
In general, 'a horse' signifies knowledge or understanding of the Word. In an opposite sense it signifies the understanding of the Word falsified by reasonings, and likewise destroyed from self-derived intelligence. 'A dead horse' signifies no understanding of truth from the Word.
Genesis 49:8-12
8
"Judah, your brothers will praise you. Your hand will be on the neck of your enemies. Your father's sons will bow down before you.
9
Judah is a lion's cub. From the prey, my son, you have gone up. He stooped down, he crouched as a lion, as a lioness. Who will rouse him up?
10
The scepter will not depart from Judah, nor the ruler's staff from between his feet, until he comes to whom it belongs. To him will the obedience of the peoples be.
11
Binding his foal to the vine, his donkey's colt to the choice vine; he has washed his garments in wine, his robes in the blood of grapes.
12
His eyes will be red with wine, his teeth white with milk.
