I've been finding a few of these on the same wall of my apartment the path month. Size is maybe 3-5 mm.
I live in an apartment in Toronto Canada.
Thanks in advance!
Without clearer photos it is pretty hard to say, however, I think it is likely to be one of the Dermestidae family of beetles.
I think this is most likely to be a carpet beetle, given the light/dark mottled pattern on the shell.