A 7x7 board rated steady logic, level 90 of 300. Catdoku levels are identical for every player, so this solution always matches the board in your game.
The level 90 board
Place one cat in every row, every column and every colored patch. No two cats may touch, not even diagonally.
Level 90 answer
Row 1: column 1, in the yellow patch
Row 2: column 7, in the sky patch
Row 3: column 3, in the rose patch
Row 4: column 5, in the mint patch
Row 5: column 2, in the lilac patch
Row 6: column 6, in the peach patch
Row 7: column 4, in the aqua patch
How to solve level 90, 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).
Cat 1 of 7: the sky patch is down to a single free square at row 2, column 7, so its cat settles there.
Cat 2 of 7: the yellow patch is down to a single free square at row 1, column 1, so its cat settles there.
Every free square of the mint patch sits in column 5, so the mint cat must come from there and the rest of column 5 can be crossed out. Cat 3 of 7: the aqua patch is down to a single free square at row 7, column 4, so its cat settles there.
Every free square of the lilac patch sits in column 2, so the lilac cat must come from there and the rest of column 2 can be crossed out. Cat 4 of 7: the rose patch is down to a single free square at row 3, column 3, so its cat settles there.
Cat 5 of 7: the mint patch is down to a single free square at row 4, column 5, so its cat settles there.
Cat 6 of 7: the peach patch is down to a single free square at row 6, column 6, so its cat settles there.
Cat 7 of 7: the lilac patch is down to a single free square at row 5, column 2, so its cat settles there.