The dog is . . . . . . . . . . than the giraffe.
shorter
The giraffe is . . . . . . . . . . than the zebra.
taller
The dolphin is . . . . . . . . . . than the whale.
smaller
The rabbit is . . . . . . . . . . than the tortoise.
faster
The baby elephant is . . . . . . . . . . than the adult.
younger
The adult bear is . . . . . . . . . . than the baby.
older
The tortoise is . . . . . . . . . . than the cheetah.
slower
The snake is . . . . . . . . . . than the iguana.
longer
The elephant is . . . . . . . . . . than the mouse.
bigger
The snail is . . . . . . . . . . than the frog.
smaller