No.
Only ungulates (cattle, antelop, deer) eat cud. Basically, they eat grass, but they cannot digest grass (no mammals can.) So they developed a system of outsourcing the job to somebody else.
They have symbiotic bacteria in a big pouch in their stomach. When they eat grass, the grass goes into the pouch. The bacteria eat the grass and multiplies enormously. Then the ungulates would belch out the lump of bacteria and chew it again. That is cud. It is high-protein, rich in minerals and very good food.
Rabbits simply do not have symbiotic bacteria pouch in their stomach, so they do not eat cud. Interestingly, The Bible (Levictus) wrongly described that rabbits chew cud.
Let it relax. The cow won't chew its cud unless it feels unthreatened and comfortable.
snowy owls are the ones that mostly eat Arctic hares
No. Calves don't eat their mom's cud, they drink or suckle milk from their mom.
yes
Of course, rabbits and hares are in the same family of Legamorphs.
Hares typically consume a diet of grasses, herbs, and other plant materials. While hares may eat carrots if they come across them, they are not a staple part of their diet.
yes
Yes.
Oh honey, chickens don't have cud to eat in the first place. Cud is regurgitated food that some animals chew again for better digestion, like cows. Chickens are more into pecking at grains and bugs, not chewing the same food twice. So, nope, chickens don't eat cud, they have better things to do with their time.
Arctic hare pellets do not eat arctic hares; instead, they are the droppings of arctic hares. These pellets are composed of undigested plant material that the hares consume as their primary diet. The misunderstanding may arise from the phrasing, but in reality, the pellets are a byproduct of the hares' feeding habits, not a form of consumption.
Hares will eat meat only in desperate situations, however its digestive system was not designed to digest meat so it could make it ill.
Arctic Hares do not eat Lemmings nor do they eat any meat. Arctic Hares are herbivores which means they only eat vegetation. Lemmings are also herbivores.