Skinned dog - Before painting weights

Here i am identifying some of the key areas that need to be sorted in painting weights....

After skinning my character i animated the main features such as the arms and legs and head. From this i can see a lot of deformation in the character. Above we can see that the stomach isn't moving correctly as its influences are in the wrong place.

Above the leg is nearly there, however the stomach around it needs to be more rounded.
The arms are making the back of the character the wrong shape, so if i paint weights to let the character relax and move better, it will look more realistic....