Trying to identify a futuristic sci-fi with last remains of humanity (a boy?) lives in the wilderness hunting etc. allied with some mutant bear (maybe red?) called Baer. Some sort of control is excerted over the planet/remnants of humanity by a robotic species with 'pencil thin necks?' living in control towers that breed new humans in 'test tubes' (boy breaks in to witness this at some point when rising up against them). Recall a part of the story where they are being pursued by the robots in space ship flying above while they escape under tree cover.
Read this in a UK primary school library - late eighties - interested to find for my own kids?