Archibald Archer > Archie > Archie Boo-boo > Boo-boo > Boobs > Lord Boobington
Our dog is called Nutmeg. A lovely name for a dog. But the sad truth is most of the time we call her Nutface.
A friend of ours called her cat Princess Clitorina of Hither Greenovia, or Clitty for short. She thought this hilarious until she went to the vets and they called out “Clitty Davies?”
My dog, Poppy, is known as Pops, Popachops, Popalopachops, The Popster and lumpadump, mainly.
Our cat is called Megatron, Meg for short. He gets called Meg-face, Meggy-moo, Moo-face, Moogles, Megise and, by our nearly-2-year-old, “Beg”.
Our cat, Ceremony, is mostly referred to as Cat. When we have a visitor, though, we revert to her real name so that we can say, “Come in, but don’t stand on Ceremony”
My dog is Stan, but mostly “Oh bloody hell Stanley”
We had a dog called Dill, named after children’s TV character in The Herbs. I couldn’t understand why my Mum disapproved of me yelling “Dildo!” when it was time for a walk.
Also: Wilson > Pickle > Bumface, which doesn’t quite have the same sense of evolution.
My old dog was Susie. She quickly became Schnooky, then Schnooky Schnoo, ending up as LTJ Schnookem
Poppy, aka Popsicle, Poppycat, The Popster, Pipsqueak, Purball, Poirot, Honeybadger, The Badger, Bumfluff/Fluffybum, The Fishmonster, Squeaker, Lil Squeaky, Squeaky McSqueakerson, Smellycat, Slaughterer of Mice, The Supervisor, World’s Worst Cushion, Tiny Lion, Tuxedo Tiger 
Our cat is called Catthulhu, after HP Lovecraft’s god monster, but as she’s obviously a cat, we just call her the Thulhu bit now.
Our three cats are Lounge (because he resembles a brown velour sofa from the 1970s), Bin Cat (always sitting on one) and PsychoMog (no explanation needed). Needless to say, none of those are their real names.
Shep became Sheep, then Sheepstack Lightning.
A friend had a cat called Hero. Name got shortened to Ro, then Roaster, then Doctor Roaster, then Roast.
Sylvie is our dog’s name. But: Sylv, Sylvoid, Sylvain Sylvain, Foxface Alpha, Foxtwat, Meatlog, Logmeat, Logdog, etc. etc.
Daughter’s called Mabli. Started calling her Mabs for short. Quickly evolved to Moobs. In approx 5yrs’ time, she’ll have an issue with this.
We had a family dog, Heidi, whose nicknames included Golden Pastures, Nostrilization, Evil Dog, Constant Wag, Grunty Shnurr, and Kevin Constner.
We inherited a second hand idiot Labrador already named Reuben 7 years ago. He’s Roo-bow-boo, Boo-boo, Reubix Cube, The Cube, Reubpunzel (let down your god hair).
Martha, Martha Moomintroll, Martha Moomintroll Meakins, Marmite, Mook, Moothy, Twatsticks Fandango. That last one was a swerve none of us were expecting.
We’ve got a cat called Google. Her original name was Guts, because she was a greedy-guts. Guts became Gutsy-Goo, then Gutsy Goo Goo Goo, and finally Google. Makes perfect sense really.
Ours is called Ruby. Try shouting her name just once…
My cat is called Moo as we found him on a dairy farm. But he’s a real biffa and doesn’t know he’s a Cat. So we call him DogBearCat. (Also Boo, Moomin, little Man.)
Cat called Macy. She’s grey so was just called Grey for a while. This was misheard by a friend, and she became Graham. My eldest son was then born, for no reason when he learned to talk he called her Eamonn. She’s now known as Eamonn.
Yes. My cat Eric was mainly called Eggbum.