Bright-Eyed And Bushy-Tailed Meaning

(idiomatic) Eager, alert, enthusiastic, and lively.

Example: 2008, Chris Harry, "QB Johnson turns heads at minicamp," OrlandoSentinal.com, 3 May (retrieved 3 May, 2008),
  "They're eager to learn, bright-eyed and bushy-tailed," coach Jon Gruden said.