All those creatures we'd be seeing on our walks through nature if our ancestors hadn't chopped em up.

Note wild horse (domestic horse), aurochs (domestic cattle) and cave lion (lion) are often not considered distinct species and thus not truly extinct. The same is true for the caspian tiger subspecies. (siberian tiger)

I believe the Dhole might deserve a spot on this list too but I've seen some conflicting evidence on this.

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So originally* we had a hippopotamus, 2 elephants, 4 rhinoceroses, 2 horses, 6 deer, 10 bovids, 3 bears, a hyena, 6 large cats, 2-3 large canids and 2 humans. **

We now have 0 hippopotamuses, 0 elephants, 0 rhinoceroses, 1 horse, 5 deer, 7ish bovids, 2 bears, 0 hyenas, 2 largish cats, 2 large canids and 1 human. And nearly all the species we do still have occur in very small parts of their original range and/or at much lower than natural densities.

• 'originally' being ~40.000 years ago when modern humans first arrived in Europe.

** not counting Mediterranean island species which included many cool elephants, hippos & deer and one extremely cool goat.

(This list includes all terrestrial mammals that can weigh ~15kg or more.)