No.
Being a mammal, the echidna is an endotherm, or what used to be commonly called "warm-blooded". Endotherms regulate their body temperature via their own metabolism.
Ectotherms used to be known as "cold-blooded". Ectotherms rely on the external environment to control their body temperature, and include reptiles and fish.
ectotherm
An ectotherm
ectotherm
It's an ectotherm
Jellyfish have no blood.
An ectotherm, meaning it relies on external temperatures.
ectotherm.....
A snake is a vertebrate and is an ectotherm (cold-blooded) like most reptiles.
I think it's ectothermic but I'm not 100% about 95%.
yes
Yes
Yes.