The kind where their hind legs would be wrapped around your neck and belly pressing against the back of yoir head Like a person.

Bottom heavy :)

Heavy very heavy unless its a foal. Unless its a unicorn or pegasi. They may be able to use their magic/wings to help relive some weight or in the pegasi case cast a spell to make them lighters to carry in that case it would be like carryng a stufed plushy

It probably feels the same as when a shepherd carries a sheep on his shoulders. It's warm, I think

Like a lamb.

7967146
Even though alot of fics describe picking up a pony as not being very heavy?

7967158
In the case of the sheep I assume the wool. For the pony would her belly be warm?

7967169
Oh i tought realistically if its in fic again it wont be that difficult depending of the streght of the one carring

7967143
Heavy.

Kinda like carrying a Very heavy dog

I wouldn't find Celestia to be very heavy if she didn't eat so much cake.