This is from the comment made by the artist and if I don't know a better way to get the PNG out of it than clicking the download button and hope that it isn't a sample somehow...

For the police team:
Left one Doberman from Arknights?
Right one is Poli from Nikke turned into a dog (common jk regarding her)?

bngyialtc said:

For the police team:
Left one Doberman from Arknights?
Right one is Poli from Nikke turned into a dog (common jk regarding her)?

Leftmost is actually Fenomeno from Umamusume. The rightmost blob of white dog I have no ideas also.

bngyialtc said:

For the police team:
Left one Doberman from Arknights?
Right one is Poli from Nikke turned into a dog (common jk regarding her)?

Yes, that's Poli from Nikke, turned into a dog