I fix
1. Animal Midwife = AM
2. Barkley13 = Barks, Barkbark, Barky
3. mypetmoose = mpm, petmoosy; Lawper = Lawp, Lawpy, Lamprey, Lamp
4. dolphin106258 = dolphin, dolphino, dolph
5. ziggyandjazzy = Ziggy, zigjazzy, zigjaz, zigzag, zigzagoon, ZJ, ziggyjazzy, jazziggy
6. emlady09 = Emmy, em
7. WildZoo = WZ, Dubz, Dubzy, wubz, subs, doobs, and the occasional Zoo
8. Dinashadow = Dina, dino
9. Ms Procrastinator = MsPro, MsP, Pro
10. johnnaboo = jboo, jbooze, jboozy, jbizzle, jboozed, jboobs, hobo
11. Doggo Labs = Doggo, Doggy
12. muttmanager = mutt, mutts, mutty
13. SARdoghandler = SAR, Sardine, Sardines
14. SportPonies = Sporty, Sport Sport, sporty spice
15. cubsrule4e = cubs, cubby
16. genny = genny, gengen, pengen
17. Stagg737 = Stagg, staggikarp
18. StayingPositive2017 = Paws, Pawsy
19. PippyPony = Pippy, Pip, Pips, Pipperoni, Pip Pip, Pipsqueak, Pipped Ponies, Pip Pip Hooray, pipperoncini, pipsy
20. Navilly = Nav, Navy, Navi, Na'Vi, Nelly
21. Melchizedek = Mel, Cheezit, Cheezy, Cheezy D, Mel's Cheezits, Cheeeez