No they will get very sick
Mustard seeds are kitniyot so Ashkenazi Jews aren't supposed to eat mustard. Some Sephardi and Mizrachi groups will eat mustard though.
we eat the seed of the mustard
You can eat processed mustard as a condiment, seeds, oil, and even the greens.
Yes. They will eat Collards which are in the brassica family that includes plants like turnips, kale, mustard, rape, etc... They will eat them more readily after a frost. I plant them every year in my food plots.
NO A Deer is a herbivore and does not eat meat.
lions, tigers.
People who like the flavor of mustard as well as the flavor of garlic eat garlic mustard.
lions eat deer and deer eat grass.
No. Deer are herbivores - they don't eat animals. Herbivores are plant eaters.
deer eat grass and any other plants
No. Deer are herbivorous, which means they eat plants.