Question

cambiar a plural
this is a rabbit that is a horse this is a fly that is an ostrich

cambiar a singular
these are mice these are butterflies those are children those are monkeys

Answer 1

the first these are rabbits that are horses
the second these are mocas that are ostriches
the third one is a mouse, a butterfly, a child, a monkey

Answer 2

these are rabbits , these are my rabbits ,there are rabbits