Well this is defintly super bad, since I went so quickly but here`s my tips for you, it may be harder since you draw with a mouse and I draw with a tablet:
First, you need fluffy-ness to your fur.
Also, more separtation between the hind legs, and the front legs.
Had in detail { like fur details, and etc. } to the animal of what your drawing { I did a wolf, because it`s easier for me to explain with }
Ears, need to be a bit more pointy and a little more spread apart from each other.
Paws; the need toes, everyone animal has toes. { if you want I can draw a paw and tell you what the details are to them }
The extra toe; if you`re drawing a wolf, on the front two legs, they have five toes, unlike the hind legs.
Hind legs; the knee drops down so it`s curved all most when it 'drops'.
Hope this help you C:
First, you need fluffy-ness to your fur.
Also, more separtation between the hind legs, and the front legs.
Had in detail { like fur details, and etc. } to the animal of what your drawing { I did a wolf, because it`s easier for me to explain with }
Ears, need to be a bit more pointy and a little more spread apart from each other.
Paws; the need toes, everyone animal has toes. { if you want I can draw a paw and tell you what the details are to them }
The extra toe; if you`re drawing a wolf, on the front two legs, they have five toes, unlike the hind legs.
Hind legs; the knee drops down so it`s curved all most when it 'drops'.
Hope this help you C:

