A cursory scan of pets in the UK shows thousands of 'licensed exotics'. Then, there are the unlicensed exotics. Lions and tigers and snakes, oh my. Escapes and deliberate releases cause problems all over the world. The exposure of a black market pet ring from the efforts of a young citizen scientist would be amusing.
The Seattle area had a case of 'old world alligatorid'. Many years ago, people recreating on and around Green Lake, reported an alligator / crocodile. A knowing citizen went to the lake at night and 'spotlighted' the urban monster. A pet Caiman had been set free into Green Lake. It may have survived on available fish and waterfowl but the cold temperatures would have been challenging.
Years ago, before the pre-boarding inspections, a woman attempted to transport a garter snake to Alaska. She had the snake in her purse and it escaped and slithered over the footwear of the passengers. Total chaos in a Boeing 727. I met this woman years afterward when I transported a Silky Terrier puppy to Anchorage for her. I knew the family from fishing.
Seattle has had a Caiman, 'Leif Bearickson' the black bear, deer, cougars, flocks of green parrots (that have taken up residency), and those are the atypical animals that have been published.
When a report of an exotic comes in, just add it to the list. Humans can't seem to resist being around exotics. Look at us.
I don't know anything about the area where Daniel lives. Any horses nearby? 'Horse therapy' for autistic persons is a positive action for some.