I would note for physiotherapy, most pre-reg masters look specifically for degrees in e.g. biomedical sciences, physiology, human biology etc, rather than biological sciences (or zoology) generally. However it's also an exception subject which means you can get full funding from SFE for doing it as a second undergraduate degree, rather than a pre-reg masters.
Outside of that, there isn't going to be any material difference in "job prospects" between zoology and biological sciences. They cover largely the same content (excepting plant sciences) and most generalist grad schemes in business, the media, civil service, etc, don't care what your first degree was in.
So if your main interest in animal biology, it would make a lot of sense to do a zoology degree as you really don't miss out on anything compared to doing biological sciences in the long run, but might enjoy it more in the short run! Also the only area that tends not to be covered in zoology but is covered in biological sciences is plant science related topics. Plus you can probably take those as optional modules anyway if you wanted...
Otherwise most biological sciences degrees will focus on animal biology roughly the same amount - slightly less than their parallel zoology courses, but much more than any biomolecular science course (e.g. biochemistry, biomedical sciences, genetics, physiology etc). You might also want to look at courses in conservation and/or ecology generally as well.