Rabid Bite mechanics
"Summoning sickness" does exactly two things: it prevents the creature from attacking, and it prevents the creature from using abilities with the tap symbol.

Nothing else.

If a creature has other abilities, those are all usable.  If the creature is targeted by a spell the spell takes its normal effect (unless it was trying to force the creature to attack).

The creature can even be tapped to pay for costs that read "tap an untapped creature you control", since the cost isn't using the tap symbol instead.

Rabid Bite will behave as normal.