If you like Animorphs...
If you like the Animorphs series, you may like:
Switchers, by Kate Thompson,
When freakish weather grips the Arctic regions and moves southward, an Irish girl and her strange companion save the world from disaster
through their ability to switch into animal forms.
Wild Blood, by Kate Thompson,
Shortly before she turns fifteen and loses the power to "Switch," Tess spends time with her cousins in the Irish countryside trying out different animal forms, but when her cousins disappear in the woods she must face her fears to save them
If you are interested in more titles try visiting out book match list,
especially "Fantasy and Science Fiction"