I frist started out with a gate that was 18 inches high and Pixie was jumping it at 3 months so then I went to a different gate that was 41 inches high. I also had a problem with her squeezing through the sides of the gate. I swear she was an escape artist. The only thing that saved me was her ex-pen she could never escape out of there. Pixie is now 7 months and she still goes in her ex-pen when I go anywhere just bc I can relax and know that she is not getting into anything while I am gone.
Kennel-Aire Exercise Pens - Exercise Pens - Crates & Kennels - PetSmart