Merry Woofy Christmas

It’s Christmas Eve and we are happy that there are still some gifts left that Santa could put under the Christmas tree! Most of them say „Nala“ written on it and that’s how she loves her Christmas. But what more could she possibly get? Hasn’t she basically eaten all the treats and ripped apart the duck plushie already?\n\nNormal Sudoku rules apply: Place the digits 1-9 in every row, column and box exactly once each.\n\nEvery digit that appears in a circle must also appear in at least one of its 4 surrounding cells.\n\nIf an arrow is present in a cell, the digit in the cell the arrow comes from appears in the grid in the direction of the arrow at a distance of N cells, where N is the digit in the arrow's cell. (Not all arrows are necessarily given - there is no negative constraint.)\n\nExample: If R2C9 had an arrow coming from R1C9 that was pointing to the left with a 5 placed on that arrow and the digit above that arrow (R1C9) was a 6, then another 6 would be placed in R2C4.\n\nAdditionally the grid is partially covered in fog. Placing correct digits will clear the fog from surrounding cells, possibly revealing more clues.