Committing a sin by eating animal's flesh According to the Holy Bible, are we committing a sin by eating animal's  flesh?
If No, Why?
Paul deals with exactly this matter in his first epistle to the young minister, Timothy :

Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils; Speaking lies in hypocrisy; having their conscience seared with a hot iron; Forbidding to marry, and commanding to abstain from meats, which God hath created to be received with thanksgiving of them which believe and know the truth. For every creature of God is good, and nothing to be refused, if it be received with thanksgiving:


[I Timothy 4:4 KJV]

I think there is no need for me to add any further words.
I have simply highlighted what is most relevant to the question.