I have a few tips, if you dont like or feel comfortible with the tips or things i suggest, simply dont use them. no feelings hurt. so first off, i would begin working on basics, like no jumping up sit,stay,lie down ect. what do you mean by he gets "jelouse"? does he bark or growl at you? push his way in? nip you? what ever he does nip it in the bud NOW the second he does ANY of those behaviors or whatever he does, give him a verbal correction like "NO" when he does it, if he pushes between you two scold him and send him away or out of the room and make him stay out of the room, youll have to do this 100 times in one session to get him to give up and ignore you, but DO IT. dontl et him get away with it, even if your teird and worn out after a long day, work with him to teach him that behavior is unacceptible ALWAYS. do you have a babyroom picked out yet? when you do i would limit the dogs access to it, donot allow him to go in freely, teach him its okay to lie outside of the door but not to come in, this will help keep your baby safe later on when he/or she cries in the crib the dog will not feel free to just run in and take control of the weird sound. also i would practice lieing a baby or throw blanket in the middle of the livingroom and practice teaching him that he is NOT allowed to lie on it not even on one tiny little corner, teach him to give the blanket space, this is setting your dog up to learn that he is never allowed to lie on the babys blankets weather the baby is on them or not, the second you see him lie down or sit on or even walk across the blanket shoo him away. this will help ensure that when the baby is older and learning to sit up you will feel safe lieing him or her on the floor and not worry about the dog sitting on or lieing on the baby. i personally would also teach your dog to never sniff or put his faceinto a stroller, thats what i taught Cesar so he is never in a babys face thus he is never smacked by a baby or toddlar thus i never have to worry about him taking a snap out of a child when they push his face out of theres while they are in a stroller. what i did was, if he ever stuck his face into a stroller, i would give him a quick lead jerk and say "UHUH" when he stopped i praised him. i would also invest in a few baby bottles and fill them up with maybe some milk, some formula, some juice and set them on the floor and practice the "leave it" command, never allow your dog to touch the bottles not even a quick lick off the nipple, give him a scolding if he does. i know alot of people find it endearing to watch the dog and the new baby climb all over eachother, snuggling up together and shareing ice cream cones and lolli pops. sure its sweet and cute with SOME dogs, some dogs are mellow and mild mannerd and dont have much prey drive or domineering tendencies. but there are alot of dogs who do have a high prey drive and hearing that baby wail in its crib is enough to send them into prey mode causeing an attack, or feeling the need to take a nip from a toddlars face who tries to push the dogs face out of its own. or some dogs just dont like the sound or the excitment and will nip to keep it quiet or because the sound excites them, i wouldnt say Cesar has a perticularly high prey drive but certian sounds excite him. alot of parents on youtube i see will have there dogs lieing right next to the baby on the same blanket on the floor, slowly the dog nudges and rolls around and eventually pushes the baby from the blanket its so funny! the dog is allowed to do this, no harm, theres no aggression there, so the dog who already has the tendency to be domineering begins to see the blanket on the floor as his, its fine when the baby is little and doesnt wiggle much the dog pushes it off slowly by pushing its back into it or its butt and takes the blanket, but then the baby is mobile the dog tries this and the baby instinctivly pushes back the dog who has never been told not to take this blanket gives the child a quick snap to say 'no this is mine you cant do that" parents cant figure out whre it came from, ill tell you where its because your dog was allowed to make a disicion about whos blanket it was. or with the bottles, you might think its hillarious when the dog smells formular or milk in the bottle and slwly licks it right out of your babys mouth HAHA! too silly, untill one day the dog who is prone to being domineering once again tries to take the bottle from your child but the child is old enough to swat the dog away, another potential snap because you allowed the dog to make the call. im not saying ALL dogs will have a problem in those areas, there arem any who are sweet and mild mannerd and good natured and who would have no problems later on, but some dogs can and will see a toddlar or a baby swatting at them a NO NO and will be dogs and discipline the way dogs do, with a snap or a bite. hence the reason i always try to advocate teaching all dogs to give a new baby and an older baby space so your dog learns that its not okay to get into your childs face when he or she is waddling around with a cookie or a bottle or a sippy cup and try to take it, that its not okay for your dog to step on or lie on or get into your babys face while they sleep or crawl on the floor because trust me once your baby is crawling, your NOT going to be able to keep them in a playpen 100 percent of the time and why keep the dog in the crate everytime the baby is walking or crawling around when you can simply teach the dog to respect the babys space and things once your child is older and begins to invade the dogs space you can begin teaching them how to respect a dog as well and very soon youll have two freinds who respect and trust eachother, who can snuggle into bed at night or crawl around the floor together and play.