TAMING DOES NOT WORK. These creatures are non-tamable and if you look at the more section here on dododex it says it isn't tamable. Those people who are saying they are tameable are wrong. Up this so newbies and seasoned players alike don't waste time on false rumors.
Tried this "taming" method on official servers and on singleplayer both. Did not work. Used 12 bulbdogs on one, on the other 11 bulbdogs and 10 shinehorns. I had a trap for the seekers with a 1x1 box border around it, lightpets pressed against the wall. I even threw 50 glowsticks in the box with the seekers. No tame. I demoed the middle walls to see if they were blocking the light, and still no taming. Reckon the comments saying you can are just messing with you to waste your time. Or they are on unofficial/modded servers.
So… there is no conventional method of taming but force tame does work, and supprissingly the are pretty good tames because they eat a small amount of meat and are rideable I hope they make them tamable soon