My name is Aries!

We Adopted Aries as a three month old puppy from a local shelter. He is now 1.5 years old and maybe 40-50 pounds. He’s quite lanky and hasn’t quite filled out yet.
He has grown up around a cat and kids.
He loves the cat and does try to play with him and chases him sometimes but never in a harmful way.
He is really excited around children and because he’s still a puppy he does get hyper and we’ve been trying to teach him boundaries and not to jump but he’s not great at it yet.
He is house trained.
He likes to nap a lot around the house when he isn’t looking for a toy to chew on.
His biggest issue is leash reactivity. He is good with dogs when he is off leash, but he does start barking and lunging when he sees another dog and is on a leash. That’s our biggest reason for rehoming because we live in an apartment and it’s getting stressful to take him outside.
He needs dedicated training and a yard and lots of love. He is a sweet boy and I’m not sure where the leash issue came from.