1. Don't choose if there is a curve at the seam of the fence! The structure of the upper width and the lower narrow structure is easy to jam the dog's legs and even the head, and the more you struggle, the tighter it gets, which is very dangerous.
2. Don't choose a fence with a horizontal grid! This fenced dog is easy to climb out of. The end of the dog's prison escape is that the furniture suffers!
3. Don't choose fences with thresholds! The bones of the puppy have not yet developed well, and jumping so high a threshold every day can easily cause damage to the hip and knee joints, and the dog will be lame for a long time, walking and jumping, resulting in joint pain.
4. Don't buy patent leather wrapped outside! The dog begins to change teeth in three months, loves to gnaw things, patent leather fences are easy to gnaw off, may appear diarrhea and even poisoning.