It?s a dog. Nice result but you kind of have to make it up as you go. Symmetry in almost everything except the eyes and the top of the ear on the right. Here?s some help to get started. R1/C8-10,C14-16 R4/C4-5,C9-10,C15-16,C19-21 R22/C9-16 C1/R13-16 C25/R13-16.
R1/C8-10,C14-16
R4/C4-5,C9-10,C15-16,C19-21
R22/C9-16
C1/R13-16
C25/R13-16.
another little hint: the bottom 5x5 squares in each corner are blank (r18-22, c1-5 and 20-24)