617
Who is it?
The naked mole rat - one of only two known to science eusocial vertebrates, the only mammal with unstable body temperature, covered with the most meager of all terrestrial mammals scalp, undisputed champion among rodents of life and diversity make sounds - in addition, is also insensitive to certain forms pain. Studies have shown that naked mole rats do not respond to the impact of acid and capsaicin (the substance contained in a spicy peppers). Nobody imagine this pet does not want to make?
A source
A source