i think it is at lv.23 or 25 or something but I'm not sure
(P.S. i have torterra lv.100, palkia lv.51 and heatran lv. 75
Level 38.
Houndoor evolves at level 24 into Houndoom.
check on serebii.net it will have its levels and info on all Pokemon btw its level 24
Houndour evolves into Houndoom starting at level 24.
All you need to do is train it to level 27
It is suppose to evolve at the Level of 20,but if you want it to evolve later it can evolve anything after it is at Level 20.
It will evolve by level. Teddiursa will evolve into a Ursaring at level 30.
They evolve at level 36
It will evolve at level 36.
They evolve on level 40
it evolve on level on 64
if you dont let it evolve at the required level of level 20. itll try to evolve at every level following.