Changing the sizes of the porcupine and salamander

When I did a test print on my book, the images of the porcupine and the salamander looked really small on the page compared to the tortoises. This is because the images are next to each other, it left a lot of space above and below them. To resolve this I've decided to move them about, so;

What was this

Is now like this

And what was like this



Is now like this

Having them like this means I can make the images a lot bigger!