The OP writes
The dog started to sniff the baby and then seemed to lose interest quickly
They said that for the time being OP's husband is not welcome back in their home
The OP provided a summary for those who couldn't read the entire story
We were at my parents for dinner. Their dog snapped at, growled and barked at our 2 month old baby. This resulted in my husband grabbing the dog from my dad. My husband told them if the dog ever so much as scratched out baby he would break the dog's next. Parents still upset and told me husband no longer welcome in their home.
Let's head into the comments section and find out what other Redditors have to say
It should not be hard to pick
Mediating a relationship between both parties
The OP should have her husband's back
From a behavioural perspective
They decided to trust an animal
Some dogs are good with kids
They are totally in the wrong
The OP should buy the husband a beer
An accident can occur in an instant and it can result to a lifelong injury, and even death so it's not worth it. Simply put, OP's parents doesn't understand dogs as it is inappropriate for such a dog to be near a child.
Also, many Redditors pointed out that some dogs are easily scared of kids because they're not used to them so OP's parents shouldn't be trying to socialize him at this time.