This is an interesting thread. Note that cats and dogs are already being cloned, which is a crude sort of immortality.
Considering the amount of money people will spend on medical care to keep their pets alive, they'll certainly pay for radical life extension therapies and cryopreservation once they are available. Cloning would become a fallback option.
This raises the possibility of weird scenarios, like someone putting their dog into cryostasis due to a catastrophic vehicle injury and the slim hope the future surgeries will be able to fix it, and also making a clone of that dog to be a companion in the interim. Like Barbra Streisand bringing her two cloned dogs to the gravestone of the dead original, maybe our fictitious person will bring his clone to Alcor to stand next to one of the vats.
Plus i think that the first mind uploading will be perfored on rats, primates and even dogs. So they may be the first to become immortal.
I never thought of that! Yes, the first organic life form to be uploaded and to achieve immortality will be a lab animal, not a human. The first AGI we create will also probably live forever.
But what happens if the owners die or disown their immortal pet?Are they just going wander the earth or sit in a cage at an animal shelter until the sun goes super nova?Or will people start killing them as soon as they're tired of them since they won't die on their own?Immortality can be a curse and it seems cruel to give that curse to animals that didn't want it in the first place.
Another human would probably adopt the pet. Whatever happens, the pet would eventually die from an injury long before the Sun went supernova.
Some animals do live forever, and some species of turtle live in captivity for over 100 years. None have become fluent in any language. I know turtles can't speak, but as far as I know it didn't make them much more intelligent.
Maybe a 100 year old parrot or monkey would. Both can communicate with humans with either sign language or vocally.
With maybe the exception of dolphins, no animals have the capacity for language. By the same token, humans lack an innate capacity for flight. A dog could live for 1 million years and never learn to understand or speak words, and a human could practice flapping his arms as wings for 1 million years and never succeed at flying.