Harakati za wanyama na wadudu

Chui wa theluji hubeba mikia yao midomoni mwao ili kuwazuia kupata mvua na uchafu. Mkia wa paka wenye madoadoa ni mrefu sana na mzito, hutumiwa kama kubalansisha. Ikiwa inakuwa mvua, aerodynamics katika kuruka itabadilika !!
 
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