The worldgen are below, if you want to re-generate the world. There's lots of rejects, accept them all (p) when you get the warning message.
A small correction: the lions are on a 4x4 embark (includes tropical shrubland). On a 3x4, you get a tropical forest, which has lots of exotic wildlife as well. Most of it non-predatory, though...
[WORLD_GEN]
[TITLE:LARGE]
[DIM:257:257]
[END_YEAR:1050]
[BEAST_END_YEAR:600:80]
[REVEAL_ALL_HISTORY:1]
[CULL_HISTORICAL_FIGURES:1]
[ELEVATION:1:400:1600:1600]
[RAINFALL:0:100:1600:1600]
[TEMPERATURE:25:75:800:800]
[DRAINAGE:0:100:1600:1600]
[VOLCANISM:33:100:1600:1600]
[SAVAGERY:33:100:1600:1600]
[ELEVATION_FREQUENCY:2:1:1:1:1:1]
[RAIN_FREQUENCY:2:1:1:1:1:1]
[DRAINAGE_FREQUENCY:2:1:1:1:1:1]
[TEMPERATURE_FREQUENCY:2:1:1:1:1:1]
[SAVAGERY_FREQUENCY:2:0:1:2:3:4]
[VOLCANISM_FREQUENCY:2:0:1:2:3:4]
[GOOD_SQ_COUNTS:100:1000:2000]
[EVIL_SQ_COUNTS:100:1000:2000]
[PEAK_NUMBER_MIN:200]
[OCEAN_EDGE_MIN:2]
[VOLCANO_MIN:200]
[REGION_COUNTS:SWAMP:4000:6:0]
[REGION_COUNTS:DESERT:4000:6:0]
[REGION_COUNTS:FOREST:8256:13:0]
[REGION_COUNTS:MOUNTAINS:8256:13:0]
[REGION_COUNTS:OCEAN:4000:4:0]
[REGION_COUNTS:GLACIER:0:0:0]
[REGION_COUNTS:TUNDRA:0:0:0]
[REGION_COUNTS:GRASSLAND:8256:13:0]
[REGION_COUNTS:HILLS:8256:13:0]
[EROSION_CYCLE_COUNT:300]
[RIVER_MINS:800:800]
[PERIODICALLY_ERODE_EXTREMES:1]
[OROGRAPHIC_PRECIPITATION:1]
[SUBREGION_MAX:1500]
[CAVE_MIN_SIZE:5]
[CAVE_MAX_SIZE:25]
[MOUNTAIN_CAVE_MIN:100]
[NON_MOUNTAIN_CAVE_MIN:200]
[ALL_CAVES_VISIBLE:1]
[SHOW_EMBARK_RIVER:2]
[SHOW_EMBARK_POOL:2]
[SHOW_EMBARK_M_POOL:2]
[SHOW_EMBARK_M_PIPE:2]
[SHOW_EMBARK_CHASM:2]
[SHOW_EMBARK_PIT:2]
[SHOW_EMBARK_OTHER:2]
[SHOW_EMBARK_TUNNEL:2]
[TOTAL_CIV_NUMBER:50]
[TOTAL_CIV_POPULATION:20000]
[PLAYABLE_CIVILIZATION_REQUIRED:1]
[ELEVATION_RANGES:0:0:0]
[RAIN_RANGES:0:0:0]
[DRAINAGE_RANGES:0:0:0]
[SAVAGERY_RANGES:0:0:0]
[VOLCANISM_RANGES:0:0:0]