A very cute character / design so far!
My main gripes are on the color field -- too little contrast, you can barely tell the shades, while colors themselves are too far apart and don't really "talk" to eachother. Also, some parts of the sprites are really light, while some others are really dark -- I'd like to see this against a background to see how it'd look.

I did a small palette edit, added a new shade of gray to help his coat stand against dark and light environments, made sure to remove pure white (avoid pure white and black at all costs! unless its a voluntary decision to use them, of course, but it just doesn't harmonize well with most palettes that have subtler colors) hue, saturation-shifted and increased the contrast on the shades of each color, decreasing the contrast of the overall palette to increase readability. Hope it helps! ;u; <3
keep it going!
edit: I fucked up when saving and the palette returned to its previous state :I
this isn't how I did it but its somewhat the direction you should go. ; wwww ; good ruck!
edit2:
tried to redo what i did, welp