A 8x8 board rated fiendish, level 187 of 300. Catdoku levels are identical for every player, so this solution always matches the board in your game.
The level 187 board
Place one cat in every row, every column and every colored patch. No two cats may touch, not even diagonally.
Level 187 answer
Row 1: column 7, in the yellow patch
Row 2: column 1, in the sky patch
Row 3: column 6, in the rose patch
Row 4: column 3, in the mint patch
Row 5: column 5, in the lilac patch
Row 6: column 8, in the peach patch
Row 7: column 2, in the aqua patch
Row 8: column 4, in the coral patch
How to solve level 187, step by step
After every placed cat, cross out the rest of its row, its column, its patch and the four corner squares around it. The steps below assume you do (the in-game auto-paws assist does it for you).
Every free square of the peach patch sits in column 8, so the peach cat must come from there and the rest of column 8 can be crossed out. Cat 1 of 8: the yellow patch is down to a single free square at row 1, column 7, so its cat settles there.
A cat at row 5, column 6 would leave the lilac patch with no home for its cat, so cross that square out. A cat at row 6, column 4 would leave the lilac patch with no home for its cat, so cross that square out. The peach, aqua and coral patches all squeeze into rows 6, 7 and 8, so those rows are reserved for them; every other square there can be crossed out. Every free square of the lilac patch sits in row 5, so the lilac cat must come from there and the rest of row 5 can be crossed out. Cat 2 of 8: the mint patch is down to a single free square at row 4, column 3, so its cat settles there.
Cat 3 of 8: the lilac patch is down to a single free square at row 5, column 5, so its cat settles there.
Cat 4 of 8: the rose patch is down to a single free square at row 3, column 6, so its cat settles there.
Cat 5 of 8: the coral patch is down to a single free square at row 8, column 4, so its cat settles there.
Cat 6 of 8: the aqua patch is down to a single free square at row 7, column 2, so its cat settles there.
Cat 7 of 8: the sky patch is down to a single free square at row 2, column 1, so its cat settles there.
Cat 8 of 8: the peach patch is down to a single free square at row 6, column 8, so its cat settles there.