I'm sure Kevin will do a full article but I couldn't help but notice something Simmons said...SPOILER

"What sort of Hellcow produces carmine milk?" - Simmons
"I don't know, the file just says Bessy" - Kenneth

I guess that means Dracula exists in the MCU.

I love the Marvel Wiki info on her;

Abilities

As a living animal, Bessie was an adequate provider of milk.

Strength level

As a living animal, Bessie possessed the strength level of a healthy, adult female cow. Upon her transformation into one of the undead, her strength level increased to superhuman proportions.

Also of interest, saw these on Instructables;