|"It Came From Beyond"|
|Number in season:||6B|
|Original Airdate:|| April 4, 2005|
|Written by:||Peter K. Hirsch|
|Storyboard by:||Gerry Capelle|
"Arthur Makes Waves"
"Three's a Crowd"
Grandma Thora takes in a stray, an adorable little dog named Killer? It soon becomes clear that the name fits, as Killer bullies every person and animal in sight. Can Killer let her guard down long enough to make a few friends, or will she have to give up her new home?
- Killer had debuted before in the book Arthur's Christmas.
- In the Croatian dub of Arthur, Killer is male instead of female.