In another Daily Express article,

In another Daily Express article, J.K. Rowling talks about some of the creatures she shies away from:

Asked about dangerous creatures featuring in Fantastic Beasts, she added: “You don’t want to mess with a dragon, obviously. Then you have things like Acromantula, which Harry has already met in Book 2, but he didn’t know it was an Acromantula when he met it. I’m not going to say any more, because you have to buy the book. Then there’s Alethiafold, which is the thing I would least like to be attacked by, which I think is quite a sinister creature. It slides under doors at night and suffocates its prey. So personally that would be my worst one.

“You don’t want to be bitten by a Doxy, which is a kind of biting fairy, and probably wise not to be pinched by a Mackled Malaclaw either as it makes you very unlucky after you’ve been pincered.”