It isn't. The plural of platypus is platypuses, not platypi.
Multiple platypus are Platypuses.
Platypi are NOT extinct
No, more than one platypus is two or more platypuses. The plural is not 'platypi'.
unfortunately, you misspelled platypus. it is a common mistake though. more than one platypus are platypi.
The plural of platypus is platypuses. It is not 'platypi'.
The plural of platypus is platypuses.It is not platypi.
More than one platypus is "platypuses". It is not "platypi".
More than one platypus is two or more platypuses. The plural is not 'platypi'.
octopus- octopi platypus- platypuses not platypi.
"Platypus" or "platypuses" are both accepted plural forms.The plural of platypus is not platypi. It is unfortunate that some dictionaries include platypi as a plural. Listing "octopi" as the plural of octopus is also incorrect, for the same reason. Both words are from Greek, not Latin."Platypi" is a colloquialism, and incorrect both grammatically and etymologically. The term uses pseudo-Latin rules.
Platypus - platypi cactus - cacti
No. They are wild. Feral refers to animals that were once domesticated or their descendants. Platypi were never domesticated.