Which sentence states a fact?

 - The American red squirrel, or Tamiasciurus hudsonicus, looks graceful as it leaps from tree to tree.
 - Born blind, baby squirrels depend on their mothers for two to three months after birth.
The second sentence states a fact.
Born blind, baby squirrels depend on their mothers for two to three months after birth.
It can be proved by searching online for information about how young squirrels develop.
The first sentence states an opinion.
The American red squirrel, or Tamiasciurus hudsonicus, looks graceful as it leaps from tree to tree.
Looks graceful shows what a person believes, thinks, or feels. Another person might have a different opinion about whether the American red squirrel looks graceful.