Hello color! Overall you've done a good job, though there are a few important things I want to comment on:

First on the form intersections a few things:

You're doing overall a good job with the lines and drawing the curves confidently! But a few things:

1.You aren't drawing through the forms completely, make sure you always draw a full solid shape for each sausage.

2.Some of the sausages you are drawing are way too squished, try to make them more simple, here are some examples for how to draw them through completely and to make them less squished.

3Your shadows are sticking to the forms, check this Try to imagine the forms as if they were sausages on your table and you had a lamp on top, they should be casting bigger shadows. Some examples on your own work

Here are some corrections, hopefully it makes it a bit easier to understand:

Now in your animal drawings largely you're doing a good job drawing them solidly, though they have some issues.

The birds are pretty well done, but on the others you aren't applying the sausage method for legs consistently, you sometimes draw sausage-like forms, other times you draw cylinders, others 2d shapes. In general uncomfortable wants you to always apply the sausage method, just like on the organic intersections exercise.

I'll give you one example with one of your drawings and then I'll ask you to do two more to see if you understood it correctly, here it is! Pay attention that I drew intersections between sausages which is something you sometimes missed, so make sure you do it on the new drawing.

So like I said I want you to do two more drawings, make sure they are a four legged animal like a cow, elephant, rhino, whatever that you can apply this sausage method I explained. Good luck and keep up the good work!