My dog has wounds and lumps on one side. Is it an emergency?

These lumps are not typical of a flea allergy dermatitis. That typically is just a superficial rash with itching, hair loss, scabs, etc. These lumps are concerning. Your pet may have developed abscesses which are deeper infections that form pockets of pus or infectious fluid. This is worth a trip to the vet for a recheck. I do not feel that it is a life threatening emergency, but it should be addressed by your veterinarian as soon as regular business hours resume. Your pet may need prescription antibiotics, the lumps may need to be aspirated or checked with a needle and if they are full of pus, they should be drained. Please have your vet recheck him as soon as possible,

You can take him to your vet tomorrow, it's not an emergency. this lump needs to be checked and analysed as there are many conditions and types of tumors that could look like that. take him to the vet, they will perform a fine needle aspiration on the growth and send it to the lab for analysis. when the result comes, the vet will advise what needs to be done according to the diagnosis.

This is something that can be looked at during g normal business hours and does not appear to be an emergency. That spot may be a type of growth/ cyst or it may be an area of skin infection. Have your vet take a look.

I think this is not an emergency and can wait to be seen tomorrow. The only thing that may happen is that this abscess bursts until then. If that happens, gently wipe off the pus, do not flush or put ointment on the wound, leave it as it is. It is likely painful at the moment, but once the abscess bursts the pain will be over. Your vet will lance and flush the abscess and prescribe an antibiotic if needed.

It could be that Carlito had a cyst, and it burst from this inside causing it to become smaller. If he is eating and drinking normally, behaving normally, and using the toilet normally, then this can wait until Monday. If any of those things change, then I would have him seen by a vet right away.

This looks like a growth that has broken open but it could also be an injury or abscess. It is not likely to be acutely life threatening but you should have Bella examined by your veterinarian. Do not allow her to lick or chew at the area

This does indeed look painful and ugly. There is no way to tell what caused this, however it is big enough and looks concerning enough to need to be seen by a vet. The vet will have these wounds cleaned after clipping all the hair around them, then disinfect them and probably apply some antibiotic ointment. Do not let Symphony lick the area as that may aggravate the condition. If she is very much in pain or if the wounds are bleeding, you should take her to a Pet ER tonight, otherwise you can probably wait until tomorrow to take her to a vet.