A pack rat or packrat, also called a woodrat, can be any of the species in the rodent genus "Neotoma". Pack rats have a rat-like appearance with long tails, large ears and large black eyes. Compared to deer mice, harvest mice and grasshopper mice, pack rats are noticeably larger and are usually somewhat larger than cotton rats.

Can we draw the following conclusion?
a packrat is a breed of dog

OPT: - Yes; - It's impossible to say; - No;