WHAT'S THAT ORGANISM!?

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Across
  1. 2. Mexican organism famous for hanging out on pink stairs
  2. 5. Grey wolf; ancestor of domestic dogs
  3. 6. Poops in cubes
  4. 8. Domesticated bovine
  5. 10. Contains a significant part of its nervous system in its arms
  6. 11. Mould that produces the antibiotic penicillin
  7. 12. Iconic Australian tree with aromatic leaves
  8. 14. Single-celled fungus; used in baking and brewing
  9. 15. Seedless vascular plant; reproduces via spores, has fronds
Down
  1. 1. Cousin of the ‘drop bear’
  2. 3. May see you in a while, but not later
  3. 4. “Unicorn of the sea”
  4. 5. An aggressive emu
  5. 7. Microscopic “water bear” that can survive in space and extreme environments
  6. 9. Somewhat intelligent bipedal
  7. 13. Cartilaginous fish which predates trees on Earth