Like many things that become contentious I think this is a clear black and white situation in some circumstances, but there is shades of gray in others.
I think the concerns raised here are all valid, though how likely the many risks are to be an actual danger, will depend on the environment and personality of the cat.
I have a 24 week old kitten and I was told his Mom is an F7 Savannah. His dad is unknown.
He has had supervised / loosely supervised access to the outdoors for a couple months now. (people in these parts think I am waaay overprotective but anyways... community norm here is outdoor cats)
Even though he is only maybe a late generation Savannah I have been a lot more nervous about this than with any cat I have had before. Partly from reading warnings in threads like this, and partly from watching what my kitten likes to do and considering what sort of trouble he may get himself into. I do think some parts of the Savannah personality could make them much more high risk or vulnerable than the average cat. There is absolutely no way I would be comfortable with a high generation cat like the aforementioned Atticas, having unprotected access to the great outdoors, and the same would be true for any cat with his personality. If people have a lifestyle that requires a indoor outdoor cat I do not think a Savannah is normally the best choice.
It is too soon to say my possibly F8 A kitten is going to be fine outside, and even if he is, he could just be lucky, but some of the factors that may be making this work are the following.
I live in an area that is relatively safe for cats. It is a rural area on an island with low traffic and no predators likely to attack a cat. I have lived in this neighborhood where unsupervised outdoor cats are the norm, for over 30 years and I have never heard of a cat being hit by a car or injured or killed by a predator. There is other non feral cats in the area and there can be cat fights if cats wander, but the last neutered male cat I had lived into his teens with no supervision, and never got into any fights where he was injured. Asking long time residents of a neighborhood what risks cats face is probably a good way to find out.
I am an indoor outdoor person, and spend about the same amount of time outside in my yard or on porches as my cat. He is not generally outside alone, doing his own thing, though he does like to snooze in a spot in the bushes beside a spring fed pond 100 feet from the house.
I work out of my home and I am almost always here.
The first month my kitten lived here I took him outside for an hour a day, wearing a harness to get him used to the area, and to see what he might get into.
I never have gone with him into areas I do not want him to go, and I always stop well back from my property lines. Now he is off harness, he seems to mostly stay within these perimeters. He does sometimes try and get me to go with him down the path to a very low traffic road 300 feet from the house, (where I sometimes go without him and visitors come up) but if I turn my back on him and go back to the house he follows me back to the more used & safe part of the yard. As long as he stays close, he can hear me calling him to get a treat, and I can hear if cat in trouble noises happen. So far, more than any cat I have had, he stays close to home and within earshot.
I make a point to call him and give him a treat once every hour or 2 if he is out of sight. He has wandered as far as my neighbors (300 feet away) but regular calls with treats seems to help keep him close.
I play with him a lot. Both inside and outside. I want this to be a fun place for him, and have him feeling he does not want to miss anything. I do not want him to get bored and go looking for adventure.
When I have to go out I lock him in the house and block off his cat door. Yesterday he removed the locked door from it’s hing before encountering the reinforcing plywood over the opening…
I sleep outside on the porch most of the year, and as there is a major rat problem on this island and the rats are active at night, the past 3 weeks my kitten has also been allowed out at night. I call him several times a night and he seems to always be close by as there is rodents living under my house he likes to hunt. He sleeps at the foot of my bed, under the mosquito net, coming and going and getting me to open and close the net when he hears something. He wakes me by walking from my feet where he sleeps to my shoulder, and gets me to let him back in with gentle meows.
He mostly just looks like an ordinary spotted tabby. If he looked like an exotic cat he would attract attention that could lead to problems.
As long as I can keep him from wandering he should be fine. And even if he does wander as much as many neighboring cats, in this area, he will probably survive, though he may get beat up by another cat.
In my situation it is totally impractical to keep him in the house when I spend so much time outside, and when cats in the area are needed for rodent control, but if the situation was different, he would probably be indoor / cat enclosure only. Even in this optimal situation there is still some risks and I will be very sad if anything happens to him.
I suppose it is possible late generation Savannah cats might be excellent farm cats, as their active sociable nature could combine, to be like a dog that loves hunting rats. But… I think there are already dogs that love hunting rats, which would be a more predictable choice. Or a kitten with a barn cat Mom.
My kitten was advertised as an ordinary tabby and it was only when I was arranging to pick him up that I was told his mom was a savannah… Kittens are very scarce and hard to find around here and I had been looking for months, so I decided to do my best to make this work. So far so good. But definitely not the most stress free choice for an indoor/ outdoor cat!!