Answer:
They don't forget.
It's black and every time it speaks it says its name.
I am a rodent that people sometimes keep as pets. I love cheese and have a long tail. What am I?
I'm not a pet with long floppy ears I just share their name when a ship disappears. What am I?
The ones in the sea are prickly, but the ones on the street might pickpocket you.
I fly to any foreign parts assisted by my spreading wings. My body holds an hundred hearts Nay I will tell you stranger things when I am not in haste I ride and then I mend my pace anon.