In the attic I found a white blob with black spots on it...is it a bug nest? What is it? It was on a beam.?

Question

It is a few inches in length and maybe 2 inches high. It looks like the shape of a snail and has black dots all over it.

Answer 1

Perhaps if you were a little more descriptive we would be able to help you  

Answer 2

Probably a spiders nest.

Answer 3

Could be a wasp or hornet nest.