Is there any ONE species of animal worldwide that makes up the largest percentage of meat/flesh eaten by other species? (Humans are included in the latter.)

I believe it is Krill.

Chicken

Crow

Flies  they get in everything we eat and get ground up

yum

Fish! Fish is eaten in almost every culture by people and cats

Funny response, but it doesn't count.
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Pig. Gotta have that bacon.

It's not humans.   It is probably insects.  Think about it. They are ground up in everything.  And their flesh can be meaty. 

Oh is that a darling thing.  It would be so cool do put that on a resume.  But they don't do that on paper.  Darn.  Gosh darn. 

Yummy.  Why doesn't it count when crow is a meat.   Huh?

Actually it is 1. Rabbit. 2. Guinea Pig (not just a pet lol) 3. Duck 4. Turkey 5. Fish 6. Lamb 7. Goat 8. Cow 9. Pig 10. Chicken http://invorma.com/10-worlds-most-consumed-animals-you-have-to-know/

Some places accept resumes electronically now.

I'd like to grind YOU up.

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I hear you... 

Isn't she a beauty? 

How many people eat crow in comparison to other meats, and it's a figurative concept, that's why it doesn't count.

For instance, you've known me for 80 years, and no matter how hard you've tried, how much crow have you gotten me to eat? The defense rests.

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Humans eat the most meat by virtue of their numbers across the world.

According to the United Nations' Food and Agriculture Organization and estimated by weight of the flesh, the pig is the most widely eaten meat in the world at 36% of all meats consumed, birds come next at 33%, and ruminants at 24%.

After humans, lions and big cats because they are obligate carnivores.

Thank you, but the question is about the meat/flesh that is eaten, not about the eaters.
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Is that not covered in the statistics on the type of animals from which the flesh comes, pigs, fowl, and cloven-footed beasts?

For the one species most eaten, the UN says the answer is pigs.

Guessing this reflects the billions of meat-eaters in China and South-East Asia.