Size It Up #3 (October 29, 2026): answers and real sizes

Round 1: Red-bellied piranha next to praying mantis

Red-bellied piranha (Pygocentrus nattereri): 28 cm · 11 in, adult, total length (silhouette: Serrasalmidae). The reference, praying mantis, is 6.5 cm · 2.6 in long, so the red-bellied piranha is 4.3× bigger. A guess between 27 cm and 29 cm scores 100; 14 cm or 56 cm scores 59. The hint window for this round was 8 cm to 40 cm.

Source: Wikipedia, Red-bellied piranha · reference: Wikipedia, Praying mantis · silhouettes: PhyloPic (public domain; public domain)

Round 2: Goliath beetle next to green iguana

Goliath beetle (Goliathus goliatus): 9 cm · 3.5 in, adult male, body length (silhouette: Cetoniinae). The reference, green iguana, is 1.5 m · 4 ft 11 in long, so the goliath beetle is 17× smaller. A guess between 8.6 cm and 9.4 cm scores 100; 4.5 cm or 18 cm scores 59. The hint window for this round was 4 cm to 20 cm.

Source: Wikipedia, Goliath beetle · reference: Wikipedia, Green iguana · silhouettes: PhyloPic (Stanislav Snäll, CC BY; public domain)

Round 3: Greater flamingo next to common starfish

Greater flamingo (Phoenicopterus roseus): 1.3 m · 4 ft 3 in, adult, standing. The reference, common starfish, is 20 cm · 7.9 in long, so the greater flamingo is 6.5× bigger. A guess between 1.2 m and 1.4 m scores 100; 65 cm or 2.6 m scores 59. The hint window for this round was 50 cm to 3 m.

Source: Wikipedia, Greater flamingo · reference: Wikipedia, Common starfish · silhouettes: PhyloPic (public domain; public domain)

Round 4: Bald eagle next to peacock mantis shrimp

Bald eagle (Haliaeetus leucocephalus): 2.1 m · 6 ft 11 in, adult, wingspan. The reference, peacock mantis shrimp, is 10 cm · 3.9 in long, so the bald eagle is 21× bigger. A guess between 2 m and 2.2 m scores 100; 1.1 m or 4.2 m scores 59. The hint window for this round was 1 m to 5 m.

Source: Wikipedia, Bald eagle · reference: Wikipedia, Peacock mantis shrimp · silhouettes: PhyloPic (public domain; public domain)

Round 5: Giraffe next to emperor scorpion

Giraffe (Giraffa camelopardalis): 5.5 m · 18 ft, adult male, to top of head (silhouette: genus). The reference, emperor scorpion, is 20 cm · 7.9 in long, so the giraffe is 28× bigger. A guess between 5.2 m and 5.8 m scores 100; 2.8 m or 11 m scores 59. The hint window for this round was 3 m to 15 m.

Source: Wikipedia, Giraffe · reference: Wikipedia, Emperor scorpion · silhouettes: PhyloPic (public domain; public domain)