zoology biology doodle icons of various animal species

amphibian animal background bear biology bird carnivore cartoon cat cell children cow crab creature darwin dinosaur dna documentary doodle education elephant ethology fish fossil frog giraffe handwriting health herbivore icon icons illustration insect invertebrate kid kingdom knowledge learn learning mammal medicine monkey panda paper pet pig prawn presentation rabbit reptile research school science sheet silhouette sketch snake species stethoscope study subject syringe tools various vector vertebrate vet wild wildlife zoo zoologist zoology