Pretty much everything can freeze to death so yes.
Domestic ferrets do well in cold temperatures of 65 to 70 Degrees Fahrenheit.
Piranhas are a cold blooded creature and get their energy from the temperature of their environment or water temperature.
They can handle going outdoors in cold weather, unless it's really frigid (below freezing) or windy, wet weather. How long a ferret can stay outside depends, such as age, health and weather. A Young ferret will probably want to stay outside longer than an older ferret. Ferrets with health problems should only stay outside for a few minutes. A ferret can play outside for about 30 to 60 minutes. An older ferret, or one in poor health, should stay no more than 5 to 10 minutes outside at a time. If you leave your ferret out for any length of time, make sure there is adequate shelter.
Cold blooded
yes
mostly cold
They are cold blooded. Their body temperature fluctuates with the environment.
Ferret can tolerate cold temperatures very well, they normally don't get cold. Ideal temperature for a ferret is about 60 - 70 degrees Fahrenheit. When a ferret sleeps, it's body naturally lowers their temperature, so upon waking they will shiver to warm up, but it doesn't mean that it's cold. Also a ferret will shiver when frightened. They have poorly developed sweat glands and cannot tolerate temperatures above 85 degrees Fahrenheit.
ectotherms
18
by swimmingThe turtle, a cold blooded animal, does not control its body temperature, It takes on the temperature of its surrounding environment.
Like all snakes, anacondas are cold-blooded; they are the same temperature as the environment.
Fish are cold blooded and depend on the temperature of their immediate environment.