Answer:
A close relative of ketchup that people often spread on their dog.
It has 8 arms and lots of ink but can't write a word.
Dark, feathery, and popular in Baltimore and fantasy books.
To you, rude would I never be, Though I flag my tongue for all to see.
What scientists might call your pooch.
I love spinach.
Animal
Difficult
Easy
Food
Funny
Kids
Logic
What am I?