Pesky varmints come in all shapes and sizes here is AUS, but I haven't seen a gator (or a croc) on the road, yet. Fortunately though, in 55 years of driving and riding I can count the number of enconters on one hand.
Hit a roo in my panel van on the Nullaabor Plain back in '75, minor damage to van, roo skipped away. Only a couple years back on the ST1300, with Mrs W riding pillion, we hit a roo in a Melbourne outer suburb called Kangaroo Ground (do'h!). It was only my silky smooth riding skills (AKA, luck) that kept us upright. Again roo skipped away into the bush, no damage to ST but a bit of blood and fur on the lower RH front fork.
Then there was the time in around '89 when I got around 20 in one hit. On a rural back rroad between Sheppaton and Bendigo, came over a crest in the road at around 140km/h in a Nissan Pintara (work car) to see something like this (a flock of Sulpur Crested Cockatoos) pic from the web. Braked, but not enough, plowed through - bump, bump, splat, splat, bump, bump, splat, splat, bump, bump, splat, splat, bump, bump, splat, splat (about 20 times).
Damage to Pintara - cracked windscreen, two smashed headlights, smash radiator grill.
Damage to cockatoo population - around 20 less.
Had to fill out an incident report for the fleet manager, I don't think he believed me.