A young fox is called a kit, cub or pup. Kit is the singular form. Pup is common in North American English.
a red fox would find the best defender for itself and its own species so its pup would be just as defensive as its father.
Vulpes vulpesVulpes vulpesVulpes Vulpes
The tip of their tails are a different colour from the rest of their pelt. The Genus only consists of "true foxes". And are relatively small in size.
A Cub most commonly. Sometimes called a pup or a kit
No, they are different species, the red fox is Vulpes vulpes and the grey fox is Urocyon cinereoargenteus.
The female name for a female red fox is called a Madula
A good name for a red fox would be a shade of red or orange, like Amber, Ruby, Scarlet, ect...
Nova
A kit
Assuming you mean the red fox, Vulpes Vulpes.
Reynard
No, the gray fox is in an entirely different genus from the red fox and would probably be incapable of producing offspring.