You did not mention that you get the error when sheet GOOSES isn't the active sheet :) - that should have given you an indication. Cells is a Worsheet property, so the following will do what you want:
With Worksheets("GOOSES")
Set rango = Range(.Cells(5, 7), .Cells(5, 11))
End With
Or (not a good practice):
Set rango = Range(Worksheets("GOOSES").Cells(5, 7), Worksheets("GOOSES").Cells(5, 11))