Identificaciones de heatherdawson

Dog found, no discernible odor for a human. Found under mossy duff. The spores are of a remarkable size (third pic) but my scope is from the 1890s and doesn’t have a scale bar. Black truffle spores under the same magnification shown for comparison. (I’ve labeled the other microscope pics with their objective sizes in case anyone else knows the magnification of early Wetzler scopes!)

Hi, I found these in my backyard. They were under a pebble path. At first I thought they were pebbles but when I picked one up I thought it looked more like a little potato. Then I realized it was a mushroom. Can you please help me identify them because I want to see if they’re poisonous for dogs before I let mine go outside. Thanks!