Canadian Timber Wolf leads with up to 175 pounds and 6 feet length. Eurasian wolf can reach over 165 pounds and 5-6 feet length. Siberian tundra wolf averages 88-108 pounds and 6 feet length. Arctic wolf weighs 70-125 pounds and 5-6 feet length. Interior Alaskan wolf ranges from 71-145 pounds and 6 feet length
Termites are social insects that consume decaying plant material. About 2,972 extant species exist, with 2,105 in the Termitidae family. Termites are closely related to cockroaches, evolving from Cryptocercus. They have moniliform antennae and soft-bodied worker caste
Thistle is a group of flowering plants with sharp prickles on leaves. Prickles protect plants from herbivores and vary by species. Flowers have feathery pappus called thistle-down. Spininess varies from soft to hard depending on species
Second-longest river in Africa, shorter than Nile. World's deepest recorded river, reaching depths over 220m. Total length with Lualaba is 4,370km. Drainage basin covers 4,014,500km², 13% of African landmass
Five interconnected freshwater lakes spanning Canada-United States border. Total surface area 94,250 square miles, second-largest freshwater lakes globally. Contain 21% of world's surface fresh water by volume. Lake Michigan is largest US-only lake by surface area
Starfish are star-shaped echinoderms belonging to class Asteroidea. About 1,900 species live worldwide from intertidal to 6,000m depth. Most have central disc and five arms, some up to 50 arms. Body covered with overlapping plates and covered by epidermis