Sounds like a Blue Heeler, possible Border Collie/Heeler mix.
Droopy dogs
white and black with big black floppy ears and a big black nose.
black widows
yes a black ands white molly does mates and the fries will be in the mixed colour might they may be half white and half black or white spot on blaack colour
Carpet Beetles
White, because it is easier to spot in the black background of space, and it reflects light in order to prevent the astronaut from over heating.
It is a lone star tick.
It is a lone star tick.
The channel catfish.
White and Black spots typically represent the clubs "lie angle" (I am assuming the make of the clubs are PING) Black spot is PINGs way of saying standard lie angle and white (i think) is 2 degrees upright. PING actually have about 10 different colors for lie angle, black and white are just two of the spectrum If ther are not PING clubs, then I have no idea
In modern Labs it's uncommon to find a white spot on the brisket (chest), but the official breed description does allow a white spot in that location, and you will find it at times. It does not mean the dog is not a purebred necessarily.
Some do, on the tail or dorsal fin.