It's the hardest thing - slicing up, cutting down, taking out, stifling and knowing that all of what you wanted maybe isn't in there. I can understand what you mean, because to you, you read it and see what you wanted to include and didn't get to, you see holes no one else can. There are brilliant lines in the second half of your second half

That avalanche of fangs, muscles and fur

which is that same careful word choice, it could only be a polar bear!

I think I can see what you mean about how you would have liked more in there, think we all might have this round lol but then, we can only answer so much in so little, and this is very entertaining, carries plenty of suspense, and packs a lot in there (even if it is slightly over) just means you'll have to join in again next week ;)