Big Update Post 5.3! I've been working on the pet collection, haven't really been keeping this list up to date.
Added a Gusting Grimore, a Son of Animus, some Pandas and Spirits, and some stoned trade-able pets to the list of things I can trade. Everything stoned is annotated with a asterisk (*).
I also updated the list of pets I'm looking for in 5.3.
And before anyone asks, I won't trade just a Coilfang Stalker for the Son of Animus. But I'm willing to talk about balanced trades.