It's highly unlikely that we would ever accept a sheet for a character like Krypto.
Not only is Krypto heavily reliant on Superman given that he has next to no supporting characters of his own, but it would also create a precedent that I think I'd rather we didn't set. I've seen people write characters that can't speak before (Black Bolt, more often than not) with limited success, but I don't think it's really viable long-term in conjunction with the aforementioned lack of an independent supporting cast.
There's a reason Wittengstein said that if a lion could speak, we wouldn't understand him – and I think in Krypto's case, it probably applies.
Not only is Krypto heavily reliant on Superman given that he has next to no supporting characters of his own, but it would also create a precedent that I think I'd rather we didn't set. I've seen people write characters that can't speak before (Black Bolt, more often than not) with limited success, but I don't think it's really viable long-term in conjunction with the aforementioned lack of an independent supporting cast.
There's a reason Wittengstein said that if a lion could speak, we wouldn't understand him – and I think in Krypto's case, it probably applies.