Before we start, it's important to note that Chihuahuas can develop food allergies at any stage in their life. Even if they've eaten the same type of name brand dog food for years, their body chemistry could change all of a sudden, causing them to experience an allergic reaction from it.
The crew also filmed many scenes in the north of Vietnam, as well as Oahu, Hawaii. No doubt the shots of Vietnam's tangled jungles helped to establish Skull Island's authentic 1970s feel. Check out the island for yourself in the trailer for Kong: Skull Island:
The beach scenes in Mysterious Island were shot on location at Sa Conca Bay, Castell-Platja d'Aro in Catalonia, Spain. The escape from the Confederate prison - using an observation balloon - was filmed in Church Square, Shepperton, England. Interiors were completed at Shepperton Studios.