That animated movie about a dog and a carousel

A widowed field mouse must move her family -- including an ailing son -- to escape a farmer's plow. Aided by a crow and a pack of superintelligent, escaped lab rats, the brave mother struggles to transplant her home to firmer ground.

The rats and mice, made intellectually superior in the original Secret of N.I.M.H., return to Thorn Valley to groom their destined leader - young Timmy Brisby.

Some time after the Mousekewitz's have settled in America, they find that they are still having problems with the threat of cats. That makes them eager to try another home out in the west, where they are promised that mice and cats live in peace. Unfortunately, the one making this claim is an oily con artist named Cat R. Waul who is intent on his own sinister plan.

Lady, a golden cocker spaniel, meets up with a mongrel dog who calls himself the Tramp. He is obviously from the wrong side of town, but happenings at Lady's home make her decide to travel with him for a while.

The love story between a pampered Cocker Spaniel named Lady and a streetwise mongrel named Tramp. Lady finds herself out on the street after her owners have a baby and is saved from a pack by Tramp, who tries to show her to live her life footloose and collar-free.

When a casino-owning dog named Charlie is murdered by his rival Carface, he finds himself in Heaven basically by default since all dogs go to heaven. However, since he wants to get back at his killer, he cons his way back to the living with the warning that doing that damns him to Hell. Once back, he teams with his old partner, Itchy, to prep his retaliation. He also stumbles onto an orphan girl who can talk to the animals, thus allowing him to get the inside info on the races to ensure his wins to finance his plans. However, all the while, he is still haunted by nightmares of what's waiting for him on the other side unless he can prove that he is worthy of Heaven again.

Charlie and Itchy return to Earth to find Gabriel's Horn, but along the way meet up with a young boy named David, who ran away from home.