Donner
[Pluto is chasing a squirrel around the stable in front of the reindeers]
I've never seen so many toys scattered!
Blitzen
That barn came out of nowhere! Murray! Who let that dog out?!
Donner
[But Pluto accidentally knocks over the Christmas tree]
Oh, Murray. What do you think, those ornaments grow on trees? [Pluto whimpers] Well... [opens the door to reveal more Christmas trees outside] They do!
Blitzen
[Other reindeers laugh at Donner's joke] [sarcastically]
Oh, yeah, that never gets old.