Apparently some kind of pet is in charge? Is it your cat or dog? Who's pet is in charge now? Weird.

HA HA HA!  It's not either of mine.

It's my cat!

At least that's what he thinks and he let's everybody know it by not covering up what he leaves in the litter box.

Then he gets mad when I clean it out and throw it away.

Just more ridiculous craziness on the part of one of your fellow muggers.   

There are many possibilities, but none that fit with someone saying something

PET Positron Emission Tomography
PET Parent Effectiveness Training
PET Personal Electronic Transactor (early Commodore PC)
PET Peter (New Testament)
PET Petroleum
PET Polyethylene Terephthalate (more common than PETE)
PET Preliminary English Test
PET Peten (Guatemala territorial division)
PET Programa de Educação Tutorial (Portuguese: Education Program Tutorial; Brazil)
PET Privacy Enhancing Technologies (Symposium)
PET Politiets Efterretningstjeneste (Danish for Police Intelligence Agency)
PET Petroleum Ether
PET Potential Evapotranspiration
PET Post-Exposure Treatment (rabies vaccination)
PET Pierre Elliot Trudeau (former Canadian Prime Minister)
PET Programa de Empleo Temporal (Spanish: Temporary Employment Program; Mexico)
PET Photoinduced Electron Transfer
PET Programming Environment and Training (HPCMP)
PET Privacy Enhancing Technology
PET Potentially Exempt Transfer (UK inland revenue)
PET Personal Terminal (MegaMan, gaming)
PET Pupil Evaluation Team
PET Pre-Eclamptic Toxaemia
PET Positron Emissie Tomografie (Dutch)
PET Performance Evaluation Tool
PET Print Enhancement Technology
PET Priority Encoding Transmission (algorithm)
PET Piezoelectric Transformer
PET Persuasion Emotion and Trust
PET Proton Electron Telescope
PET Precision End Trimmed (lumber)
PET Presidential Electoral Tribunal (Philippines)
PET Performance Evaluation Test
PET Productivity Enhancement and Technology
PET User Productivity Enhancement and Technology Transfer (Previously Productivity Enhancement and Technology)
PET Piezo-Electric Transducer
PET Phase Elapsed Time
PET Performance Evaluation Team
PET Portable Electronic Thermometer
PET Pet Energy Therapy
PET Pile Echo Tester (system for testing piles/shafts/deep foundations)
PET Project Execution Team
PET Personal Electronic Thingy
PET Professional Employment Training
PET Protected Entrance Terminal
PET Product Enterprise Team (US Navy)
PET Proposal Evaluation Tool
PET Piston Engine Technology
PET Polling Every Time
PET Permanent Engaged Tone
PET Production Environmental Test
PET Process Enhancement Team
PET Propulsion Engineering Trainer
PET Peak Engine Torque
PET Parker Endotracheal Tube
PET Pilot-Line Experiment Technology
PET Pulse Energy Thermography
PET Phase Emission Tomography
PET Precision Electric Turret
PET Physical Education Teacher (various schools)
PET Paraffin-Embedded Tissue
PET Plan de Expansión de Transmisión (Spanish: Transmission Expansion Plan)
PET Preservative Efficacy Test

My friends have a turtle and fish. I have nothing. But I'm allergic to cats. 

Pet.. As in positively the end times?