Please check your local laws regarding electrifying top of walls (at property perimeter) - I checked that a couple years ago in Mesa and I believe at that time it was not legal. Also I checked laws if I could razor wire (or similar) top of walls and don't remember what I found out but decided not to do that since I didn't want to look like a prison complex where I am in a residential neighborhood. I think a hot wire that is inside my yard (not on my perimeter wall in Mesa) could be fine legally.
If electrifying not legal I would look into alternatives or combinations of alternatives like--
1) coyote rollers or the DIY versions --Not sure if it works for bobcats but maybe.
2) There's no law against prickly pears cactus or similar planted at walls (even in planters on top of walls maybe).
3) There may be motion activated sprinklers that could deter bobcat or other predators.
4) Pigeon spikes.
5) Height of your wall (how high can you go legally according to zoning law/structurally) and how high bobcat can scale without even touching the wall?
6) Extending something to just string yarn or wire in a web to make a psychological barrier to deter landing/launching at top of wall may help.
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