Where is the seeded cow on Level 157?

The seeded orange cow is at r10c2, below the opening c2 X spine.

Which three edge targets open the Level 157 route?

After the seed, the source places r5c1, r8c8, and r7c10 in that order.

The ninth new cow goes at r1c7 in the light-green territory, completing the Unbelievable state with all three hearts.

Zoodoku level guide

expert 10 colors

Zoodoku Level 157 is a seeded 10x10 cow board; keep r10c2, then follow r5c1, r8c8, r7c10, r6c4, r3c3, r2c5, r4c9, r9c6, and r1c7.

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Keep the seeded cow at r10c2 in the orange territory.
Place the first new cow at r5c1 in the light-blue territory.
Place the second new cow at r8c8 in the yellow territory.
Place the third new cow at r7c10 in the green territory.
Place the fourth new cow at r6c4 in the pink territory.
Place the fifth new cow at r3c3 in the teal territory.
Place the sixth new cow at r2c5 in the mauve territory.
Place the seventh new cow at r4c9 in the purple territory.
Place the eighth new cow at r9c6 in the brown territory.
Finish with the ninth new cow at r1c7 in the light-green territory, then confirm Unbelievable.

Colors in this level:

Mauve, Light-green, Teal, Brown, Purple, Light-blue, Pink, Green, Yellow, Orange

Do not use a brown lower-field cell for the first target; the source-verified light-blue placement is r5c1.
Do not swap green r7c10 with brown r8c10, or brown r9c6 with another visually similar lower-row cell.

Open from seeded r10c2 with light-blue r5c1, yellow r8c8, and green r7c10 before entering the center.
Leave brown r9c6 and light-green r1c7 for the verified late close; the neighboring brown cells are not interchangeable.

Board notes 5 details

Layout: The 10x10 board has mauve and light-green across the top, teal and light-blue in the upper-left center, purple on the upper-right, pink pockets through the middle, green at r6c10/r7c10, yellow at r7c8-r8c8, orange at the seeded r10c2, and a large brown lower field.
Goal: Keep the seeded cow at r10c2 and place the new cows in verified source order r5c1, r8c8, r7c10, r6c4, r3c3, r2c5, r4c9, r9c6, and r1c7.
Opening: The first prepared frame shows seeded r10c2, a white X spine down c2, and bottom-row Xs; r1c3 briefly appears as an in-flight opening mark while the field settles.
Danger Zone: The correct light-blue, yellow, and green targets are r5c1, r8c8, and r7c10; do not substitute brown r8c10 or another open square in the lower field.
Mechanics: This is a seeded ten-cow 10x10 board with a lower-edge anchor and a long opening X spine; the final source frame shows Unbelievable with all three hearts.

Where is the seeded cow on Level 157?
The seeded orange cow is at r10c2, below the opening c2 X spine.
Which three edge targets open the Level 157 route?
After the seed, the source places r5c1, r8c8, and r7c10 in that order.
What is the final Level 157 placement and result?
The ninth new cow goes at r1c7 in the light-green territory, completing the Unbelievable state with all three hearts.