Forget your average dog, cat or rabbit – the 66-year-old is the proud owner of Caesar the crocodile.
And what's more, the retired prison officer has spent £25,000 converting his property for his pet to roam free, while Mr Weller has moved himself into the loft of his bungalow in Rochester, Kent
He told the Daily Mail: "I never wanted a cat or a dog. He's my closest companion and my day revolves around feeding, cleaning and entertaining him."
Mr Weller bought the reptile, a spectacled caiman native to the rainforests of Central America, six years ago when he was less than 1ft long. Now seven years old, he is 5ft 6in – but still growing. His species, which can live for 40 years, normally reach 7ft.
Caesar, who is not allowed outside, spends his days listening to Classic FM, watching TV and resting his head on his owner's lap.
Mr Weller, who also keeps terrapins, parrots and lizards, said: "Most people are terrified when they find out I live with a crocodile.
"When I first got him he would often bite me. As he's got older he's become happier and now he's completely docile. Neighbours, and particularly children, like him."