The size end of the hippos will depend on the materials used.
Using the materials indicated in the pattern the final size of the hippo is approximately 20 cm (7.87”) for the baby and 27 cm (10.63”) for the mother.
Both hippos are woven with the same pattern; I just changed the size of the materials.
Unless the contrary is indicated, the work is in spiral.
As you crocheting, you fill in the work.