Answer:
I am pronounced as one letter, written with three. I come in blue, black, brown, or grey. Reverse me and I read the same either way. What am I?
I am heavy forward, but backward I'm not. What am I?
I am a popular afterlife location to send evil people
I can be short and sometimes hot. When displayed I'm never cold. What am I?
Canine children.
A little house full of meat, no door to go in and eat.