My question is, does the death pact signet death (triggered when the other ally dies) give XP to enemy? I'm death leveling some pets I wanted to have in my menagerie, and don't know if death pact signet can speed things up.
I don't know, but your best bet to death level is to have two mesmers with 16 in fast casting and 12 in inspiration, put only resurrect and ether feast on their bars. Flag them at your location, set them to fight, and remove their weapons.
DP yourself to 1 HP, and make sure that the animal you want to level was the last thing to kill you. Every time one of them uses resurrect you'll die again, and the pet will gain XP.
I was thinking of one rezmer with Signet of Return, and 2 Rits with death pact signet.
I've tried and works perfect, every few secs there's a boom and we are all dead (except the mesmer) but that doesn't seem to give XP, or at least I haven't noticed any speed increase in the leveling.
Too complicated. Just run Vizunah Square with a Splinter Barrage build and two MMs + Heroes, you'll gain at least a level per run. Swap out an optional skill for Charm.