That's really interesting! I'd be curious to see what other translations read as (especially ancient languages, if I were smart enough to read them), but in the NIV translation, you could absolutely read that as a call to eat only plants, and to care for the animals.

It could also be taken another, slightly more terrifying way, too.

If we assume what we're doing is right, farming and killing animals for food, and work backwards from there, the verses say that God made the animals, and gave us dominion over them. If we assume the way we currently treat animals and view them is how that dominion works, then when it goes on to say that God made man in God's image, it could be implied to say that man is to animal as God is to man.

Which could mean God is farming and killing us for God's sustenance. We're nothing but chickens in cages.

25 God made the animals of the earth after their kind, and the livestock after their kind, and everything that creeps on the ground after its kind. God saw that it was good.

26 God said, “Let’s make man in our image, after our likeness. Let them have dominion over the fish of the sea, and over the birds of the sky, and over the livestock, and over all the earth, and over every creeping thing that creeps on the earth.” 27 God created man in his own image. In God’s image he created him; male and female he created them. 28 God blessed them. God said to them, “Be fruitful, multiply, fill the earth, and subdue it. Have dominion over the fish of the sea, over the birds of the sky, and over every living thing that moves on the earth.” 29 God said, “Behold,[a] I have given you every herb yielding seed, which is on the surface of all the earth, and every tree, which bears fruit yielding seed. It will be your food. 30 To every animal of the earth, and to every bird of the sky, and to everything that creeps on the earth, in which there is life, I have given every green herb for food;” and it was so.

31 God saw everything that he had made, and, behold, it was very good. There was evening and there was morning, a sixth day.

Footnotes

1:29 “Behold”, from “הִנֵּה”, means look at, take notice, observe, see, or gaze at. It is often used as an interjection.

Public domain, WEB translation.

Problem is we are not herbivores. And especially back then when we didn't have global access to food when ever we wanted being a vegan would be almost impossible in certain locations.