Anabolic steroids, it’s actually a really sad story
Because Clifford is fictional.
“Honey, what animal shelter did we get Clifford from again?”
“I don’t know, Chernobyl I think, why?”
“Cause Emily was playing with him and he just grew like 20 feet. Maybe we should call them and ask if this is normal.”
Emily Elizabeth loved him so much he became massive. Therefore before he grew she didn’t love him
Because he’s big red dog. Dummy