New Puppie: Are You Looking to Buy a Second Dog

You may be looking to buy another dog, but:

You are afraid to break the harmony in your home right now.

You are afraid to disrupt the first one, which is already a little older and has developed certain habits.

You fear that your dog will have aggressive reactions towards the little invader.

You assume it is going to feel abandoned and possibly develop a destructive felling of jealousy.

And you fear you may not be able to handle all possible reactions.
You need not worry. But, it is important that you are aware of the ticks on dogs and the ways of removing ticks from dogs.

First of all, your "senior" will be afraid for your life when you introduce your little home newcomer. It will try to chase away the puppy. This can last from 15 days to sometimes two to three months in extreme cases.
Do not change anything! Talk and act normally.
You should say No if the small one wants to sleep in the basket of your senior dog. Set up its own basket and teach it to sleep there. The two dogs should only sleep together in one basket when their relationships are perfect. Your dog should always feel "home".
If the puppy gets three to four meals per day, you must watch the senior dog not to try to eat its kibble. Similarly, the young dog should not eat the kibble of the old one. You should introduce the little dog to its own plate from day one. The two should get used to eating from their plates without addressing the other's. You should avoid overconsumption when you weigh the croquettes just to make sure that the two do not fight over them. Of course, the older dog must always be served first and the little one second. This is true when removing ticks from dogs. Ticks on dogs make them uncomfortable.

If you have a tray for peeing, you should not allow the little one to go to it whenever it wants. It should wait for the other to do its business.

Always grooming the elder dog first and reward it in the end as usual. Then groom the little one and reward it in the end. This way you can express your love towards both of them.

Make play a priority and comfort your older dog when it is sad. Avoid latex toys and solid and very noisy toys as they encourage it to play alone. Toys are very useful when you leave home.

The youngster will try to seduce the senior all the time and its facial expressions will bear fruit sooner or later. But do not be afraid of aggressive reactions of the older dogs. They will protect the young ones unless they bite with their small sharp teeth when they play. The elder will make a big roar to let it know not to repeat it and it will stop.

Cuddle your oldest dog first as usual and only then cuddle the young dog. Be moderately affectionate so that neither of the two feels discouraged or jealous.

The older dog must remain the leader under all circumstances. This is indisputable.