What kind of animal is Gru's pet Kyle?

Question

In the movies Despicable Me 1 and 2, Gru has a pet with sharp teeth and small body. His pee makes the shrub dead! The creature looks like a skunk to me but when Lucy scans him, its species is "UNKNOWN".

Do we have any knowledge of what that creature really is?

Answer 1

Wikipedia lists him in a list of fictional dogs in animation, which supports the general idea that it's a genetically modified dog. (His name is Kyle; that's what he's listed under in the Wiki article.)

In both films, Gru refers to Kyle as his “dog” when people ask what Kyle is:

• In DM, when Gru is showing the girls around the house, Margo ask what Kyle is. Gru says that he’s his “dog”, which gets a growl from Kyle. However, when asked what sort of dog Kyle is, he says, “He’s a… I don’t know.”
• In DM2, Gru makes pointed reference to that fact that he’s putting a “dog” in his neighbour’s backyard.

Answer 2

a

He's most likely a altered Brussels Griffin. Lol.

Answer 3

Based on looks and Gru's bizarre collection, Kyle must be a mythical dog Chupacabra. Bluish, spiky sharp spines, few threads of fur, very pronounce fangs something that crosses a dragon with canine. Please take note that a Chupacabra legends denotes that when disturbed it leaves a leave a sulfur stench, this explains Kyle's effect on plants when it pees.

Gru simplified it as of a "dog" but actually confuses him too, Kyle was not identified in DM 2 because Lucy's data base presumably identifies only animals with known existing DNA thus a mythical undocumented species like a cryptid chupacabra fit Kyle to a T is not on the list