I am toying with two macros at the moment -
#showtooltip [pet:Spider] Web; [pet:Chimera] Froststorm Breath
/cast [pet,mod:alt] [pet: Spider] web; [pet, mod:alt] [pet: Chimaera]Froststorm Breath;
/cast [nomod] Concussive Shot;
The aim of the macro is to either use the pets ability or concussive shot not both which is what it seems to be doing at the moment.
The other was a more general one
so instead of calling the command i susbstitute that with
/click pet ability 4 (for example)