Inexperienced people trying to raise squirrels will feed them what they believe is healthy food, assuming that because the animals are eating they are doing fine. However, comparison with the healthy baby squirrels in the bottom right shows that these squirrels are actually starving.

Baby squirrels fed Hartz kitten milk for 10 days	Baby squirrel fed evaporated milk
Baby squirrel fed scalded cows milk	Baby squirrels fed powered squirrel forumula