Donald Trump Jr. -- Yes I Killed Those Animals ... and I'm PROUD of It!

Donald Trump Jr. says he bears NO SHAME for slaughtering a bunch of exotic animals in Africa last year ... claiming all of his kills were used to feed local villagers.

TMZ broke the story ... DTJ is coming under fire for a series of pics which show him posing with his brother in front of several dead animals after a hunt last year -- even showing off a severed elephant tail.

Now, Trump Jr. is DEFENDING the hunt on Twitter ... writing, " I have no shame about [the pics]. I HUNT & EAT game ... I'm a hunter, for that I make no apologies."

He explained, "I can assure you it was not wasteful ... the villagers were so happy for the meat which they don't often get to eat. Very grateful."

"These are not endangered animals as an fyi."