What did the animals remember the morning after the Rebellion in Animal Farm? How did they react?

When the animals woke up the morning after the rebellion, they realized the farm belonged to them and inspected it.

The animals kick the humans out when they get tired of being neglected and abused.  Jones and his men flee.  When they wake up the next morning, at first they have forgotten what happened.  As they wake up, they remember that the humans are gone and the farm belongs to them now.  They look at it with new eyes, as if they have never seen it before, because now it is Animal Farm and not Manor Farm.

But they woke at dawn as usual, and suddenly remembering the glorious thing that had happened, they all raced out into the pasture together. A little way down the pasture there was a knoll that commanded a view of most of the farm. The animals rushed to the top of it and gazed round them in the clear morning light. (Ch. 2)

The animals become very playful.  They explore the farm, looking at everything carefully and making an inspection of what is now theirs.

Yes, it was theirs−everything that they could see was theirs! In the ecstasy of that thought they gambolled round and round, they hurled themselves into the air in great leaps of excitement.  Then they made a tour of inspection of the whole farm and surveyed with speechless admiration the ploughland, the hayfield, the orchard, the pool, the spinney. (Ch. 2)

The animals get rid of most of the trappings of humans.  They destroy the whips, halters, and nosebags.  They also bury the meat.  Eventually the animals realize that the cows need to be milked, but it turns out the pigs can do it.  The pigs can do many things that humans could.  Now there are no humans in charge. The animals are their own masters.