These stickers use vector graphics from Pixabay ( [1](https://pixabay.com/en/cute-elephants-elephant-balloons-2757831), [2](https://pixabay.com/en/gnu-africa-animal-face-head-159596), [3](https://pixabay.com/en/animal-cartoon-comic-equine-horse-2030012), [4](https://pixabay.com/en/dragon-pet-boy-domestication-152823), [5](https://pixabay.com/en/sos-devil-bull-47037) ), and [vectorportal](http://vectorportal.com).